Straighten out LPC32 UART clocking (still some baud calculation issues)
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4917 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
parent
a5a37d6208
commit
7cdcedd7b3
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@ -142,7 +142,7 @@ extern volatile uint32_t *current_regs;
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* CONFIG_DRAM_END
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*/
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extern uint32_t g_heapbase;
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extern const uint32_t g_heapbase;
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/* Address of the saved user stack pointer */
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@ -59,8 +59,8 @@ endif
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CHIP_ASRCS =
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CHIP_CSRCS = lpc43_allocateheap.c lpc43_cgu.c lpc43_clrpend.c lpc43_gpio.c
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CHIP_CSRCS += lpc43_irq.c lpc43_lowputc.c lpc43_pinconfig.c lpc43_rgu.c
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CHIP_CSRCS += lpc43_start.c lpc43_timerisr.c
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CHIP_CSRCS += lpc43_irq.c lpc43_pinconfig.c lpc43_rgu.c lpc43_serial.c
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CHIP_CSRCS += lpc43_start.c lpc43_timerisr.c lpc43_uart.c
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ifneq ($(CONFIG_IDLE_CUSTOM),y)
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CHIP_CSRCS += lpc43_idle.c
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@ -812,55 +812,55 @@
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#define PINCONF_TRACEDATA3_1 (PINCONF_FUNC3|PINCONF_PINSF|PINCONF_PIN_8)
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#define PINCONF_TRACEDATA3_2 (PINCONF_FUNC5|PINCONF_PINS7|PINCONF_PIN_7)
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#define PINCONF_U0_DIR_1 (PINCONF_FUNC1|PINCONF_PINS2|PINCONF_PIN_6)
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#define PINCONF_U0_DIR_2 (PINCONF_FUNC1|PINCONF_PINSF|PINCONF_PIN_9)
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#define PINCONF_U0_DIR_3 (PINCONF_FUNC2|PINCONF_PINS6|PINCONF_PIN_2)
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#define PINCONF_U0_RXD_1 (PINCONF_FUNC1|PINCONF_PINS2|PINCONF_PIN_1)
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#define PINCONF_U0_RXD_2 (PINCONF_FUNC1|PINCONF_PINSF|PINCONF_PIN_11)
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#define PINCONF_U0_RXD_3 (PINCONF_FUNC2|PINCONF_PINS6|PINCONF_PIN_5)
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#define PINCONF_U0_RXD_4 (PINCONF_FUNC7|PINCONF_PINS9|PINCONF_PIN_6)
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#define PINCONF_U0_TXD_1 (PINCONF_FUNC1|PINCONF_PINS2|PINCONF_PIN_0)
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#define PINCONF_U0_TXD_2 (PINCONF_FUNC1|PINCONF_PINSF|PINCONF_PIN_10)
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#define PINCONF_U0_TXD_3 (PINCONF_FUNC2|PINCONF_PINS6|PINCONF_PIN_4)
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#define PINCONF_U0_TXD_4 (PINCONF_FUNC7|PINCONF_PINS9|PINCONF_PIN_5)
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#define PINCONF_U0_UCLK_1 (PINCONF_FUNC1|PINCONF_PINS2|PINCONF_PIN_2)
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#define PINCONF_U0_UCLK_2 (PINCONF_FUNC1|PINCONF_PINSF|PINCONF_PIN_8)
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#define PINCONF_U0_UCLK_3 (PINCONF_FUNC2|PINCONF_PINS6|PINCONF_PIN_1)
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#define PINCONF_U0_DIR_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS2|PINCONF_PIN_6)
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#define PINCONF_U0_DIR_2 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSF|PINCONF_PIN_9)
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#define PINCONF_U0_DIR_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS6|PINCONF_PIN_2)
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#define PINCONF_U0_RXD_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS2|PINCONF_PIN_1)
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#define PINCONF_U0_RXD_2 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSF|PINCONF_PIN_11)
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#define PINCONF_U0_RXD_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS6|PINCONF_PIN_5)
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#define PINCONF_U0_RXD_4 (PINCONF_FUNC7|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS9|PINCONF_PIN_6)
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#define PINCONF_U0_TXD_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS2|PINCONF_PIN_0)
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#define PINCONF_U0_TXD_2 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSF|PINCONF_PIN_10)
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#define PINCONF_U0_TXD_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS6|PINCONF_PIN_4)
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#define PINCONF_U0_TXD_4 (PINCONF_FUNC7|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS9|PINCONF_PIN_5)
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#define PINCONF_U0_UCLK_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS2|PINCONF_PIN_2)
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#define PINCONF_U0_UCLK_2 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSF|PINCONF_PIN_8)
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#define PINCONF_U0_UCLK_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS6|PINCONF_PIN_1)
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#define PINCONF_U1_CTS_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_11)
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#define PINCONF_U1_CTS_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_2)
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#define PINCONF_U1_CTS_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_7)
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#define PINCONF_U1_CTS_4 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_4)
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#define PINCONF_U1_DCD_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_12)
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#define PINCONF_U1_DCD_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_11)
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#define PINCONF_U1_DCD_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_9)
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#define PINCONF_U1_DCD_4 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_5)
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#define PINCONF_U1_DSR_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_7)
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#define PINCONF_U1_DSR_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_10)
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#define PINCONF_U1_DSR_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_8)
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#define PINCONF_U1_DSR_4 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_0)
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#define PINCONF_U1_DTR_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_8)
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#define PINCONF_U1_DTR_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_12)
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#define PINCONF_U1_DTR_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_10)
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#define PINCONF_U1_DTR_4 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_1)
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#define PINCONF_U1_RI_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_10)
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#define PINCONF_U1_RI_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_1)
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#define PINCONF_U1_RI_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_6)
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#define PINCONF_U1_RI_4 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_3)
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#define PINCONF_U1_RTS_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_9)
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#define PINCONF_U1_RTS_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_3)
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#define PINCONF_U1_RTS_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_5)
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#define PINCONF_U1_RTS_4 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_2)
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#define PINCONF_U1_RXD_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_14)
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#define PINCONF_U1_RXD_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_14)
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#define PINCONF_U1_RXD_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_12)
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#define PINCONF_U1_RXD_4 (PINCONF_FUNC4|PINCONF_PINS3|PINCONF_PIN_5)
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#define PINCONF_U1_RXD_5 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_7)
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#define PINCONF_U1_TXD_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_13)
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#define PINCONF_U1_TXD_2 (PINCONF_FUNC2|PINCONF_PINSC|PINCONF_PIN_13)
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#define PINCONF_U1_TXD_3 (PINCONF_FUNC2|PINCONF_PINSE|PINCONF_PIN_11)
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#define PINCONF_U1_TXD_4 (PINCONF_FUNC4|PINCONF_PINS3|PINCONF_PIN_4)
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#define PINCONF_U1_TXD_5 (PINCONF_FUNC4|PINCONF_PINS5|PINCONF_PIN_6)
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#define PINCONF_U1_CTS_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_11)
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#define PINCONF_U1_CTS_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_2)
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#define PINCONF_U1_CTS_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_7)
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#define PINCONF_U1_CTS_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_4)
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#define PINCONF_U1_DCD_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_12)
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#define PINCONF_U1_DCD_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_11)
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#define PINCONF_U1_DCD_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_9)
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#define PINCONF_U1_DCD_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_5)
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#define PINCONF_U1_DSR_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_7)
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#define PINCONF_U1_DSR_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_10)
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#define PINCONF_U1_DSR_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_8)
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#define PINCONF_U1_DSR_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_0)
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#define PINCONF_U1_DTR_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_8)
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#define PINCONF_U1_DTR_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_12)
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#define PINCONF_U1_DTR_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_10)
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#define PINCONF_U1_DTR_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_1)
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#define PINCONF_U1_RI_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_10)
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#define PINCONF_U1_RI_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_1)
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#define PINCONF_U1_RI_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_6)
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#define PINCONF_U1_RI_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_3)
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#define PINCONF_U1_RTS_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_9)
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#define PINCONF_U1_RTS_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_3)
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#define PINCONF_U1_RTS_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_5)
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#define PINCONF_U1_RTS_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_2)
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#define PINCONF_U1_RXD_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_14)
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#define PINCONF_U1_RXD_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_14)
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#define PINCONF_U1_RXD_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_12)
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#define PINCONF_U1_RXD_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS3|PINCONF_PIN_5)
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#define PINCONF_U1_RXD_5 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_7)
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#define PINCONF_U1_TXD_1 (PINCONF_FUNC1|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS1|PINCONF_PIN_13)
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#define PINCONF_U1_TXD_2 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSC|PINCONF_PIN_13)
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#define PINCONF_U1_TXD_3 (PINCONF_FUNC2|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINSE|PINCONF_PIN_11)
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#define PINCONF_U1_TXD_4 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS3|PINCONF_PIN_4)
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#define PINCONF_U1_TXD_5 (PINCONF_FUNC4|PINCONF_PULLUP|PINCONF_INBUFFER|PINCONF_PINS5|PINCONF_PIN_6)
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#define PINCONF_U2_DIR_1 (PINCONF_FUNC1|PINCONF_PINS1|PINCONF_PIN_18)
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#define PINCONF_U2_DIR_2 (PINCONF_FUNC7|PINCONF_PINS2|PINCONF_PIN_13)
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@ -712,6 +712,29 @@
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# define BASE_USART0_CLKSEL_IDIVD (15 << BASE_USART0_CLK_CLKSEL_SHIFT) /* IDIVD */
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# define BASE_USART0_CLKSEL_IDIVE (16 << BASE_USART0_CLK_CLKSEL_SHIFT) /* IDIVE */
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/* Bits 29-31: Reserved */
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/* Output stage 17 control register (BASE_UART1_CLK) */
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/* NOTE: Clocks 4-19 are identical */
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#define BASE_UART1_CLK_PD (1 << 0) /* Bit 0: Output stage power down */
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/* Bits 1-10: Reserved */
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#define BASE_UART1_CLK_AUTOBLOCK (1 << 11) /* Bit 11: Block clock during frequency change */
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/* Bits 12-23: Reserved */
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#define BASE_UART1_CLK_CLKSEL_SHIFT (24) /* Bits 24-28: Clock source selection */
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#define BASE_UART1_CLK_CLKSEL_MASK (31 << BASE_UART1_CLK_CLKSEL_SHIFT)
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# define BASE_UART1_CLKSEL_32KHZOSC (0 << BASE_UART1_CLK_CLKSEL_SHIFT) /* 32 kHz oscillator */
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# define BASE_UART1_CLKSEL_IRC (1 << BASE_UART1_CLK_CLKSEL_SHIFT) /* IRC (default) */
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# define BASE_UART1_CLKSEL_ENET_RXCLK (2 << BASE_UART1_CLK_CLKSEL_SHIFT) /* ENET_RX_CLK */
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# define BASE_UART1_CLKSEL_ENET_TXCLK (3 << BASE_UART1_CLK_CLKSEL_SHIFT) /* ENET_TX_CLK */
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# define BASE_UART1_CLKSEL_GPCLKIN (4 << BASE_UART1_CLK_CLKSEL_SHIFT) /* GP_CLKIN */
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# define BASE_UART1_CLKSEL_XTAL (6 << BASE_UART1_CLK_CLKSEL_SHIFT) /* Crystal oscillator */
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# define BASE_UART1_CLKSEL_PLL0AUDIO (8 << BASE_UART1_CLK_CLKSEL_SHIFT) /* PLL0AUDIO */
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# define BASE_UART1_CLKSEL_PLL1 (9 << BASE_UART1_CLK_CLKSEL_SHIFT) /* PLL1 */
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# define BASE_UART1_CLKSEL_IDIVA (12 << BASE_UART1_CLK_CLKSEL_SHIFT) /* IDIVA */
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# define BASE_UART1_CLKSEL_IDIVB (13 << BASE_UART1_CLK_CLKSEL_SHIFT) /* IDIVB */
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# define BASE_UART1_CLKSEL_IDIVC (14 << BASE_UART1_CLK_CLKSEL_SHIFT) /* IDIVC */
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# define BASE_UART1_CLKSEL_IDIVD (15 << BASE_UART1_CLK_CLKSEL_SHIFT) /* IDIVD */
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# define BASE_UART1_CLKSEL_IDIVE (16 << BASE_UART1_CLK_CLKSEL_SHIFT) /* IDIVE */
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/* Bits 29-31: Reserved */
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/* Output stage 18 control register (BASE_USART2_CLK) */
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/* NOTE: Clocks 4-19 are identical */
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* _sbss is the start of the BSS region (see the linker script) _ebss is the
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* end of the BSS regsion (see the linker script). The idle task stack starts
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* at the end of BSS and is of size CONFIG_IDLETHREAD_STACKSIZE. The IDLE
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* thread is the thread that the system boots on and, eventually, becomes the
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* idle, do nothing task that runs only when there is nothing else to run.
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* The heap continues from there until the configured end of memory.
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* g_heapbase is the beginning of this heap region (not necessarily aligned).
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*/
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const uint32_t g_heapbase = (uint32_t)&_ebss + CONFIG_IDLETHREAD_STACKSIZE;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/************************************************************************************
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* arch/arm/src/lpc43xx/lpc43_clockconfig.h
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* arch/arm/src/lpc43xx/lpc43_cgu.h
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_LPC43XX_CLOCKCONFIG_H
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#define __ARCH_ARM_SRC_LPC43XX_CLOCKCONFIG_H
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#ifndef __ARCH_ARM_SRC_LPC43XX_CGU_H
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#define __ARCH_ARM_SRC_LPC43XX_CGU_H
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/************************************************************************************
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* Included Files
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_LPC43XX_CLOCKCONFIG_H */
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#endif /* __ARCH_ARM_SRC_LPC43XX_CGU_H */
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/****************************************************************************
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* arch/arm/src/lpc43/lpc43_clrpend.c
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* arch/arm/src/chip/lpc43_clrpend.c
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* arch/arm/src/lpc43/lpc43_rgu.c
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* arch/arm/src/chip/lpc43_rgu.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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struct up_dev_s
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{
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uint32_t uartbase; /* Base address of UART registers */
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uint8_t basefreq; /* Base frequency of input clock */
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uint32_t baud; /* Configured baud */
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uint32_t ier; /* Saved IER value */
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uint8_t id; /* ID=0,1,2,3 */
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uint8_t irq; /* IRQ associated with this UART */
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uint8_t parity; /* 0=none, 1=odd, 2=even */
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uint8_t bits; /* Number of bits (7 or 8) */
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uint8_t cclkdiv; /* Divisor needed to get PCLK from CCLK */
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bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */
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};
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static struct up_dev_s g_uart0priv =
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{
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.uartbase = LPC43_USART0_BASE,
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.basefreq = BOARD_USART0_BASEFREQ,
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.baud = CONFIG_USART0_BAUD,
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.id = 0,
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.irq = LPC43M4_IRQ_USART0,
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.parity = CONFIG_USART0_PARITY,
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.bits = CONFIG_USART0_BITS,
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@ -189,7 +192,9 @@ static uart_dev_t g_uart0port =
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static struct up_dev_s g_uart1priv =
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{
|
||||
.uartbase = LPC43_UART1_BASE,
|
||||
.basefreq = BOARD_UART1_BASEFREQ,
|
||||
.baud = CONFIG_UART1_BAUD,
|
||||
.id = 1,
|
||||
.irq = LPC43M4_IRQ_UART1,
|
||||
.parity = CONFIG_UART1_PARITY,
|
||||
.bits = CONFIG_UART1_BITS,
|
||||
|
|
@ -219,7 +224,9 @@ static uart_dev_t g_uart1port =
|
|||
static struct up_dev_s g_uart2priv =
|
||||
{
|
||||
.uartbase = LPC43_USART2_BASE,
|
||||
.basefreq = BOARD_USART2_BASEFREQ,
|
||||
.baud = CONFIG_USART2_BAUD,
|
||||
.id = 2,
|
||||
.irq = LPC43M4_IRQ_USART2,
|
||||
.parity = CONFIG_USART2_PARITY,
|
||||
.bits = CONFIG_USART2_BITS,
|
||||
|
|
@ -249,7 +256,9 @@ static uart_dev_t g_uart2port =
|
|||
static struct up_dev_s g_uart3priv =
|
||||
{
|
||||
.uartbase = LPC43_USART3_BASE,
|
||||
.basefreq = BOARD_USART3_BASEFREQ,
|
||||
.baud = CONFIG_USART3_BAUD,
|
||||
.id = 3,
|
||||
.irq = LPC43M4_IRQ_USART3,
|
||||
.parity = CONFIG_USART3_PARITY,
|
||||
.bits = CONFIG_USART3_BITS,
|
||||
|
|
@ -539,283 +548,23 @@ static inline void up_enablebreaks(struct up_dev_s *priv, bool enable)
|
|||
up_serialout(priv, LPC43_UART_LCR_OFFSET, lcr);
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: lpc43_uartcclkdiv
|
||||
*
|
||||
* Descrption:
|
||||
* Select a CCLK divider to produce the UART PCLK. The stratey is to select the
|
||||
* smallest divisor that results in an solution within range of the 16-bit
|
||||
* DLM and DLL divisor:
|
||||
*
|
||||
* PCLK = CCLK / divisor
|
||||
* BAUD = PCLK / (16 * DL)
|
||||
*
|
||||
* Ignoring the fractional divider for now.
|
||||
*
|
||||
* NOTE: This is an inline function. If a typical optimization level is used and
|
||||
* a constant is provided for the desired frequency, then most of the following
|
||||
* logic will be optimized away.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
static inline uint32_t lpc43_uartcclkdiv(uint32_t baud)
|
||||
{
|
||||
/* Ignoring the fractional divider, the BAUD is given by:
|
||||
*
|
||||
* BAUD = PCLK / (16 * DL), or
|
||||
* DL = PCLK / BAUD / 16
|
||||
*
|
||||
* Where:
|
||||
*
|
||||
* PCLK = CCLK / divisor.
|
||||
*
|
||||
* Check divisor == 1. This works if the upper limit is met
|
||||
*
|
||||
* DL < 0xffff, or
|
||||
* PCLK / BAUD / 16 < 0xffff, or
|
||||
* CCLK / BAUD / 16 < 0xffff, or
|
||||
* CCLK < BAUD * 0xffff * 16
|
||||
* BAUD > CCLK / 0xffff / 16
|
||||
*
|
||||
* And the lower limit is met (we can't allow DL to get very close to one).
|
||||
*
|
||||
* DL >= MinDL
|
||||
* CCLK / BAUD / 16 >= MinDL, or
|
||||
* BAUD <= CCLK / 16 / MinDL
|
||||
*/
|
||||
|
||||
if (baud < (LPC43_CCLK / 16 / UART_MINDL ))
|
||||
{
|
||||
return SYSCON_PCLKSEL_CCLK;
|
||||
}
|
||||
|
||||
/* Check divisor == 2. This works if:
|
||||
*
|
||||
* 2 * CCLK / BAUD / 16 < 0xffff, or
|
||||
* BAUD > CCLK / 0xffff / 8
|
||||
*
|
||||
* And
|
||||
*
|
||||
* 2 * CCLK / BAUD / 16 >= MinDL, or
|
||||
* BAUD <= CCLK / 8 / MinDL
|
||||
*/
|
||||
|
||||
else if (baud < (LPC43_CCLK / 8 / UART_MINDL ))
|
||||
{
|
||||
return SYSCON_PCLKSEL_CCLK2;
|
||||
}
|
||||
|
||||
/* Check divisor == 4. This works if:
|
||||
*
|
||||
* 4 * CCLK / BAUD / 16 < 0xffff, or
|
||||
* BAUD > CCLK / 0xffff / 4
|
||||
*
|
||||
* And
|
||||
*
|
||||
* 4 * CCLK / BAUD / 16 >= MinDL, or
|
||||
* BAUD <= CCLK / 4 / MinDL
|
||||
*/
|
||||
|
||||
else if (baud < (LPC43_CCLK / 4 / UART_MINDL ))
|
||||
{
|
||||
return SYSCON_PCLKSEL_CCLK4;
|
||||
}
|
||||
|
||||
/* Check divisor == 8. This works if:
|
||||
*
|
||||
* 8 * CCLK / BAUD / 16 < 0xffff, or
|
||||
* BAUD > CCLK / 0xffff / 2
|
||||
*
|
||||
* And
|
||||
*
|
||||
* 8 * CCLK / BAUD / 16 >= MinDL, or
|
||||
* BAUD <= CCLK / 2 / MinDL
|
||||
*/
|
||||
|
||||
else /* if (baud < (LPC43_CCLK / 2 / UART_MINDL )) */
|
||||
{
|
||||
return SYSCON_PCLKSEL_CCLK8;
|
||||
}
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: lpc43_uart0config, uart1config, uart2config, and uart3config
|
||||
*
|
||||
* Descrption:
|
||||
* Configure the UART. USART0/2/3 and UART1 peripherals are configured using the following
|
||||
* registers:
|
||||
*
|
||||
* 1. Power: In the PCONP register, set bits PCUSART0/1/2/3.
|
||||
* On reset, USART0 and UART 1 are enabled (PCUSART0 = 1 and PCUART1 = 1)
|
||||
* and USART2/3 are disabled (PCUART1 = 0 and PCUSART3 = 0).
|
||||
* 2. Peripheral clock: In the PCLKSEL0 register, select PCLK_USART0 and
|
||||
* PCLK_UART1; in the PCLKSEL1 register, select PCLK_USART2 and PCLK_USART3.
|
||||
* 3. Pins: Select UART pins through the PINSEL registers and pin modes
|
||||
* through the PINMODE registers. UART receive pins should not have
|
||||
* pull-down resistors enabled.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
static inline void lpc43_uart0config(uint32_t clkdiv)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Step 1: Enable power on USART0 */
|
||||
|
||||
flags = irqsave();
|
||||
regval = getreg32(LPC43_SYSCON_PCONP);
|
||||
regval |= SYSCON_PCONP_PCUSART0;
|
||||
putreg32(regval, LPC43_SYSCON_PCONP);
|
||||
|
||||
/* Step 2: Enable clocking on UART */
|
||||
|
||||
regval = getreg32(LPC43_SYSCON_PCLKSEL0);
|
||||
regval &= ~SYSCON_PCLKSEL0_USART0_MASK;
|
||||
regval |= (clkdiv << SYSCON_PCLKSEL0_USART0_SHIFT);
|
||||
putreg32(regval, LPC43_SYSCON_PCLKSEL0);
|
||||
|
||||
/* Step 3: Configure I/O pins */
|
||||
|
||||
lpc43_configgpio(GPIO_USART0_TXD);
|
||||
lpc43_configgpio(GPIO_USART0_RXD);
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
static inline void lpc43_uart1config(uint32_t clkdiv)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Step 1: Enable power on UART1 */
|
||||
|
||||
flags = irqsave();
|
||||
regval = getreg32(LPC43_SYSCON_PCONP);
|
||||
regval |= SYSCON_PCONP_PCUART1;
|
||||
putreg32(regval, LPC43_SYSCON_PCONP);
|
||||
|
||||
/* Step 2: Enable clocking on UART */
|
||||
|
||||
regval = getreg32(LPC43_SYSCON_PCLKSEL0);
|
||||
regval &= ~SYSCON_PCLKSEL0_UART1_MASK;
|
||||
regval |= (clkdiv << SYSCON_PCLKSEL0_UART1_SHIFT);
|
||||
putreg32(regval, LPC43_SYSCON_PCLKSEL0);
|
||||
|
||||
/* Step 3: Configure I/O pins */
|
||||
|
||||
lpc43_configgpio(GPIO_UART1_TXD);
|
||||
lpc43_configgpio(GPIO_UART1_RXD);
|
||||
#ifdef CONFIG_UART1_FLOWCONTROL
|
||||
lpc43_configgpio(GPIO_UART1_CTS);
|
||||
lpc43_configgpio(GPIO_UART1_RTS);
|
||||
lpc43_configgpio(GPIO_UART1_DCD);
|
||||
lpc43_configgpio(GPIO_UART1_DSR);
|
||||
lpc43_configgpio(GPIO_UART1_DTR);
|
||||
#ifdef CONFIG_UART1_RINGINDICATOR
|
||||
lpc43_configgpio(GPIO_UART1_RI);
|
||||
#endif
|
||||
#endif
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
static inline void lpc43_uart2config(uint32_t clkdiv)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Step 1: Enable power on USART2 */
|
||||
|
||||
flags = irqsave();
|
||||
regval = getreg32(LPC43_SYSCON_PCONP);
|
||||
regval |= SYSCON_PCONP_PCUSART2;
|
||||
putreg32(regval, LPC43_SYSCON_PCONP);
|
||||
|
||||
/* Step 2: Enable clocking on UART */
|
||||
|
||||
regval = getreg32(LPC43_SYSCON_PCLKSEL1);
|
||||
regval &= ~SYSCON_PCLKSEL1_USART2_MASK;
|
||||
regval |= (clkdiv << SYSCON_PCLKSEL1_USART2_SHIFT);
|
||||
putreg32(regval, LPC43_SYSCON_PCLKSEL1);
|
||||
|
||||
/* Step 3: Configure I/O pins */
|
||||
|
||||
lpc43_configgpio(GPIO_USART2_TXD);
|
||||
lpc43_configgpio(GPIO_USART2_RXD);
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
static inline void lpc43_uart3config(uint32_t clkdiv)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Step 1: Enable power on USART3 */
|
||||
|
||||
flags = irqsave();
|
||||
regval = getreg32(LPC43_SYSCON_PCONP);
|
||||
regval |= SYSCON_PCONP_PCUSART3;
|
||||
putreg32(regval, LPC43_SYSCON_PCONP);
|
||||
|
||||
/* Step 2: Enable clocking on UART */
|
||||
|
||||
regval = getreg32(LPC43_SYSCON_PCLKSEL1);
|
||||
regval &= ~SYSCON_PCLKSEL1_USART3_MASK;
|
||||
regval |= (clkdiv << SYSCON_PCLKSEL1_USART3_SHIFT);
|
||||
putreg32(regval, LPC43_SYSCON_PCLKSEL1);
|
||||
|
||||
/* Step 3: Configure I/O pins */
|
||||
|
||||
lpc43_configgpio(GPIO_USART3_TXD);
|
||||
lpc43_configgpio(GPIO_USART3_RXD);
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: lpc43_uartdl
|
||||
*
|
||||
* Descrption:
|
||||
* Select a divider to produce the BAUD from the UART PCLK.
|
||||
* Select a divider to produce the BAUD from the UART BASEFREQ.
|
||||
*
|
||||
* BAUD = PCLK / (16 * DL), or
|
||||
* DL = PCLK / BAUD / 16
|
||||
* BAUD = BASEFREQ / (16 * DL), or
|
||||
* DL = BASEFREQ / BAUD / 16
|
||||
*
|
||||
* Ignoring the fractional divider for now.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
static inline uint32_t lpc43_uartdl(uint32_t baud, uint8_t divcode)
|
||||
static inline uint32_t lpc43_uartdl(uint32_t baud)
|
||||
{
|
||||
uint32_t num;
|
||||
|
||||
switch (divcode)
|
||||
{
|
||||
|
||||
case SYSCON_PCLKSEL_CCLK4: /* PCLK_peripheral = CCLK/4 */
|
||||
num = (LPC43_CCLK / 4);
|
||||
break;
|
||||
|
||||
case SYSCON_PCLKSEL_CCLK: /* PCLK_peripheral = CCLK */
|
||||
num = LPC43_CCLK;
|
||||
break;
|
||||
|
||||
case SYSCON_PCLKSEL_CCLK2: /* PCLK_peripheral = CCLK/2 */
|
||||
num = (LPC43_CCLK / 2);
|
||||
break;
|
||||
|
||||
case SYSCON_PCLKSEL_CCLK8: /* PCLK_peripheral = CCLK/8 (except CAN1, CAN2, and CAN) */
|
||||
default:
|
||||
num = (LPC43_CCLK / 8);
|
||||
break;
|
||||
}
|
||||
return num / (baud << 4);
|
||||
#warning "Missing logic"
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
|
|
@ -883,7 +632,7 @@ static int up_setup(struct uart_dev_s *dev)
|
|||
|
||||
/* Set the BAUD divisor */
|
||||
|
||||
dl = lpc43_uartdl(priv->baud, priv->cclkdiv);
|
||||
dl = lpc43_uartdl(priv->baud);
|
||||
up_serialout(priv, LPC43_UART_DLM_OFFSET, dl >> 8);
|
||||
up_serialout(priv, LPC43_UART_DLL_OFFSET, dl & 0xff);
|
||||
|
||||
|
|
@ -920,7 +669,42 @@ static int up_setup(struct uart_dev_s *dev)
|
|||
static void up_shutdown(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
|
||||
/* Disable further interrupts from the U[S]ART */
|
||||
|
||||
up_disableuartint(priv, NULL);
|
||||
|
||||
/* Put the U[S]ART hardware back its reset state */
|
||||
|
||||
switch (priv->id)
|
||||
{
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
case 0:
|
||||
lpc43_usart0_reset();
|
||||
break;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
case 1:
|
||||
lpc43_uart1_reset();
|
||||
break;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
case 2:
|
||||
lpc43_usart2_reset();
|
||||
break;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
case 3:
|
||||
lpc43_usart3_reset();
|
||||
break;
|
||||
#endif
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
|
|
@ -1321,33 +1105,29 @@ void up_earlyserialinit(void)
|
|||
/* Configure all UARTs (except the CONSOLE UART) and disable interrupts */
|
||||
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
g_uart0priv.cclkdiv = lpc43_uartcclkdiv(CONFIG_USART0_BAUD);
|
||||
#ifndef CONFIG_USART0_SERIAL_CONSOLE
|
||||
lpc43_uart0config(g_uart0priv.cclkdiv);
|
||||
lpc43_usart0_setup();
|
||||
#endif
|
||||
up_disableuartint(&g_uart0priv, NULL);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
g_uart1priv.cclkdiv = lpc43_uartcclkdiv(CONFIG_UART1_BAUD);
|
||||
#ifndef CONFIG_UART1_SERIAL_CONSOLE
|
||||
lpc43_uart1config(g_uart1priv.cclkdiv);
|
||||
lpc43_uart1_setup();
|
||||
#endif
|
||||
up_disableuartint(&g_uart1priv, NULL);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
g_uart2priv.cclkdiv = lpc43_uartcclkdiv(CONFIG_USART2_BAUD);
|
||||
#ifndef CONFIG_USART2_SERIAL_CONSOLE
|
||||
lpc43_uart2config(g_uart2priv.cclkdiv);
|
||||
lpc43_usart2_setup();
|
||||
#endif
|
||||
up_disableuartint(&g_uart2priv, NULL);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
g_uart3priv.cclkdiv = lpc43_uartcclkdiv(CONFIG_USART3_BAUD);
|
||||
#ifndef CONFIG_USART3_SERIAL_CONSOLE
|
||||
lpc43_uart3config(g_uart3priv.cclkdiv);
|
||||
lpc43_usart3_setup();
|
||||
#endif
|
||||
up_disableuartint(&g_uart3priv, NULL);
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -41,8 +41,7 @@
|
|||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include "chip.h"
|
||||
#include "chip/lpc43_uart.h"
|
||||
#include "lpc43_uart.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
|
|
|
|||
|
|
@ -73,7 +73,7 @@
|
|||
#include "lpc43_rgu.h"
|
||||
#include "lpc43_cgu.h"
|
||||
#include "lpc43_emc.h"
|
||||
#include "lpc43_lowputc.h"
|
||||
#include "lpc43_uart.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Preprocessor Definitions
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/**************************************************************************
|
||||
* arch/arm/src/lpc43xx/lpc43_lowputc.c
|
||||
* arch/arm/src/lpc43xx/lpc43_uart.c
|
||||
*
|
||||
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
|
|
@ -50,9 +50,10 @@
|
|||
#include "chip.h"
|
||||
#include "lpc43_config.h"
|
||||
#include "lpc43_pinconfig.h"
|
||||
#include "chip/lpc43_uart.h"
|
||||
#include "lpc43_rgu.h"
|
||||
#include "lpc43_cgu.h"
|
||||
|
||||
#include "lpc43_lowputc.h"
|
||||
#include "lpc43_uart.h"
|
||||
|
||||
/**************************************************************************
|
||||
* Private Definitions
|
||||
|
|
@ -62,24 +63,28 @@
|
|||
|
||||
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
|
||||
# define CONSOLE_BASE LPC43_USART0_BASE
|
||||
# define CONSOLE_BASEFREQ BOARD_USART0_BASEFREQ
|
||||
# define CONSOLE_BAUD CONFIG_USART0_BAUD
|
||||
# define CONSOLE_BITS CONFIG_USART0_BITS
|
||||
# define CONSOLE_PARITY CONFIG_USART0_PARITY
|
||||
# define CONSOLE_2STOP CONFIG_USART0_2STOP
|
||||
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
|
||||
# define CONSOLE_BASE LPC43_UART1_BASE
|
||||
# define CONSOLE_BASEFREQ BOARD_USART0_BASEFREQ
|
||||
# define CONSOLE_BAUD CONFIG_UART1_BAUD
|
||||
# define CONSOLE_BITS CONFIG_UART1_BITS
|
||||
# define CONSOLE_PARITY CONFIG_UART1_PARITY
|
||||
# define CONSOLE_2STOP CONFIG_UART1_2STOP
|
||||
#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
|
||||
# define CONSOLE_BASE LPC43_USART2_BASE
|
||||
# define CONSOLE_BASEFREQ BOARD_USART0_BASEFREQ
|
||||
# define CONSOLE_BAUD CONFIG_USART2_BAUD
|
||||
# define CONSOLE_BITS CONFIG_USART2_BITS
|
||||
# define CONSOLE_PARITY CONFIG_USART2_PARITY
|
||||
# define CONSOLE_2STOP CONFIG_USART2_2STOP
|
||||
#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
|
||||
# define CONSOLE_BASE LPC43_USART3_BASE
|
||||
# define CONSOLE_BASEFREQ BOARD_USART0_BASEFREQ
|
||||
# define CONSOLE_BAUD CONFIG_USART3_BAUD
|
||||
# define CONSOLE_BITS CONFIG_USART3_BITS
|
||||
# define CONSOLE_PARITY CONFIG_USART3_PARITY
|
||||
|
|
@ -139,23 +144,23 @@
|
|||
|
||||
#define UART_MINDL 32
|
||||
|
||||
/* Select a CCLK divider to produce the UART PCLK. The strategy is to select the
|
||||
/* Select a CCLK divider to produce the UART BASEFREQ. The strategy is to select the
|
||||
* smallest divisor that results in an solution within range of the 16-bit
|
||||
* DLM and DLL divisor:
|
||||
*
|
||||
* BAUD = PCLK / (16 * DL), or
|
||||
* DL = PCLK / BAUD / 16
|
||||
* BAUD = BASEFREQ / (16 * DL), or
|
||||
* DL = BASEFREQ / BAUD / 16
|
||||
*
|
||||
* Where:
|
||||
*
|
||||
* PCLK = CCLK / divisor
|
||||
* BASEFREQ = CCLK / divisor
|
||||
*
|
||||
* Ignoring the fractional divider for now.
|
||||
*
|
||||
* Check divisor == 1. This works if the upper limit is met
|
||||
*
|
||||
* DL < 0xffff, or
|
||||
* PCLK / BAUD / 16 < 0xffff, or
|
||||
* BASEFREQ / BAUD / 16 < 0xffff, or
|
||||
* CCLK / BAUD / 16 < 0xffff, or
|
||||
* CCLK < BAUD * 0xffff * 16
|
||||
* BAUD > CCLK / 0xffff / 16
|
||||
|
|
@ -299,91 +304,18 @@ void up_lowputc(char ch)
|
|||
void lpc43_lowsetup(void)
|
||||
{
|
||||
#ifdef HAVE_UART
|
||||
uint32_t regval;
|
||||
|
||||
/* Step 1: Enable power for all console UART and disable power for
|
||||
/* Enable clocking and for all console UART and disable power for
|
||||
* other UARTs
|
||||
*
|
||||
* USART0/2/3 clocking and power control:
|
||||
*
|
||||
* ----------------------------------- -------------- --------------
|
||||
* BASE CLOCK BRANCH CLOCK
|
||||
* ----------------------------------- -------------- --------------
|
||||
* USART0 clock to register interface BASE_M4_CLK CLK_M4_USART0
|
||||
* USART0 peripheral clock (PCLK) BASE_UART0_CLK CLK_APB0_UART0
|
||||
* UART1 clock to register interface BASE_M4_CLK CLK_M4_UART1
|
||||
* UART1 peripheral clock (PCLK) BASE_UART1_CLK CLK_APB0_UART1
|
||||
* USART2 clock to register interface BASE_M4_CLK CLK_M4_USART2
|
||||
* USART2 peripheral clock (PCLK) BASE_UART2_CLK CLK_APB2_UART2
|
||||
* USART3 clock to register interface BASE_M4_CLK CLK_M4_USART3
|
||||
* USART3 peripheral clock (PCLK) BASE_UART3_CLK CLK_APB2_UART3
|
||||
* ----------------------------------- -------------- --------------
|
||||
*/
|
||||
|
||||
#warning "Missing logic"
|
||||
#if 0
|
||||
regval = getreg32(LPC43_SYSCON_PCONP);
|
||||
regval &= ~(SYSCON_PCONP_PCUSART0|SYSCON_PCONP_PCUART1|
|
||||
SYSCON_PCONP_PCUSART2|SYSCON_PCONP_PCUSART3);
|
||||
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
|
||||
regval |= SYSCON_PCONP_PCUSART0;
|
||||
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
|
||||
regval |= SYSCON_PCONP_PCUART1;
|
||||
#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
|
||||
regval |= SYSCON_PCONP_PCUSART2;
|
||||
#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
|
||||
regval |= SYSCON_PCONP_PCUSART3;
|
||||
#endif
|
||||
putreg32(regval, LPC43_SYSCON_PCONP);
|
||||
|
||||
/* Step 2: Enable peripheral clocking for the console UART and disable
|
||||
* clocking for all other UARTs
|
||||
*/
|
||||
|
||||
regval = getreg32(LPC43_SYSCON_PCLKSEL0);
|
||||
regval &= ~(SYSCON_PCLKSEL0_USART0_MASK|SYSCON_PCLKSEL0_UART1_MASK);
|
||||
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
|
||||
regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL0_USART0_SHIFT);
|
||||
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
|
||||
regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL0_UART1_SHIFT);
|
||||
#endif
|
||||
putreg32(regval, LPC43_SYSCON_PCLKSEL0);
|
||||
|
||||
regval = getreg32(LPC43_SYSCON_PCLKSEL1);
|
||||
regval &= ~(SYSCON_PCLKSEL1_USART2_MASK|SYSCON_PCLKSEL1_USART3_MASK);
|
||||
#if defined(CONFIG_USART2_SERIAL_CONSOLE)
|
||||
regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL1_USART2_SHIFT);
|
||||
#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
|
||||
regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL1_USART3_SHIFT);
|
||||
#endif
|
||||
putreg32(regval, LPC43_SYSCON_PCLKSEL1);
|
||||
#endif
|
||||
|
||||
/* Configure UART pins for the selected CONSOLE. Definitions are
|
||||
* required in the board.h header file in order to map pins to the
|
||||
* correct pin and GPIO configuration.
|
||||
*/
|
||||
|
||||
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
|
||||
lpc43_pin_config(PINCONF_U0_TXD);
|
||||
lpc43_pin_config(PINCONF_U0_RXD);
|
||||
lpc43_usart0_setup();
|
||||
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
|
||||
lpc43_pin_config(PINCONF_U1_TXD);
|
||||
lpc43_pin_config(PINCONF_U1_RXD);
|
||||
#ifdef CONFIG_UART1_FLOWCONTROL
|
||||
lpc43_pin_config(PINCONF_U1_CTS);
|
||||
lpc43_pin_config(PINCONF_U1_DCD);
|
||||
lpc43_pin_config(PINCONF_U1_DSR);
|
||||
lpc43_pin_config(PINCONF_U1_DTR);
|
||||
lpc43_pin_config(PINCONF_U1_RI);
|
||||
lpc43_pin_config(PINCONF_U1_RTS);
|
||||
#endif
|
||||
lpc43_uart1_setup();
|
||||
#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
|
||||
lpc43_pin_config(PINCONF_U2_TXD);
|
||||
lpc43_pin_config(PINCONF_U2_RXD);
|
||||
lpc43_usart2_setup();
|
||||
#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
|
||||
lpc43_pin_config(PINCONF_U3_TXD);
|
||||
lpc43_pin_config(PINCONF_U3_RXD);
|
||||
lpc43_usart3_setup();
|
||||
#endif
|
||||
|
||||
/* Configure the console (only) */
|
||||
|
|
@ -419,4 +351,181 @@ void lpc43_lowsetup(void)
|
|||
#endif /* HAVE_UART */
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: lpc43_u[s]art0/1/2/3_reset
|
||||
*
|
||||
* Description:
|
||||
* Reset a UART. These functions are used by the serial driver when a
|
||||
* UART is closed.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
void lpc43_usart0_reset(void)
|
||||
{
|
||||
putreg32(RGU_CTRL1_USART0_RST, LPC43_RGU_CTRL1);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
EXTERN void lpc43_uart1_reset(void)
|
||||
{
|
||||
putreg32(RGU_CTRL1_UART1_RST, LPC43_RGU_CTRL1);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
void lpc43_usart2_reset(void)
|
||||
{
|
||||
putreg32(RGU_CTRL1_USART2_RST, LPC43_RGU_CTRL1);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
void lpc43_usart3_reset(void)
|
||||
{
|
||||
putreg32(RGU_CTRL1_USART3_RST, LPC43_RGU_CTRL1);
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: lpc43_usart0_setup, lpc43_uart1_setup, lpc43_usart2_setup, and
|
||||
* lpc43_usart3_setup
|
||||
*
|
||||
* Description:
|
||||
* Configure the U[S]ART. This involves:
|
||||
*
|
||||
* 1. Connecting the input clock to the U[S]ART as specified in the
|
||||
* board.h file,
|
||||
* 2. Configuring the U[S]ART pins
|
||||
*
|
||||
* USART0/2/3 and UART1 clocking and power control:
|
||||
*
|
||||
* ----------------------------------- -------------- --------------
|
||||
* BASE CLOCK BRANCH CLOCK
|
||||
* ----------------------------------- -------------- --------------
|
||||
* USART0 clock to register interface BASE_M4_CLK CLK_M4_USART0
|
||||
* USART0 peripheral clock (PCLK) BASE_UART0_CLK CLK_APB0_UART0
|
||||
* UART1 clock to register interface BASE_M4_CLK CLK_M4_UART1
|
||||
* UART1 peripheral clock (PCLK) BASE_UART1_CLK CLK_APB0_UART1
|
||||
* USART2 clock to register interface BASE_M4_CLK CLK_M4_USART2
|
||||
* USART2 peripheral clock (PCLK) BASE_UART2_CLK CLK_APB2_UART2
|
||||
* USART3 clock to register interface BASE_M4_CLK CLK_M4_USART3
|
||||
* USART3 peripheral clock (PCLK) BASE_UART3_CLK CLK_APB2_UART3
|
||||
* ----------------------------------- -------------- --------------
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
void lpc43_usart0_setup(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Connect USART0 into the clock source specified in board.h */
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
regval = getreg32(LPC43_BASE_USART0_CLK);
|
||||
regval &= ~BASE_USART0_CLK_CLKSEL_MASK;
|
||||
regval |= (BOARD_USART0_CLKSRC | BASE_USART0_CLK_AUTOBLOCK);
|
||||
putreg32(regval, LPC43_BASE_USART0_CLK);
|
||||
|
||||
/* Configure I/O pins */
|
||||
|
||||
lpc43_pin_config(PINCONF_U0_TXD);
|
||||
lpc43_pin_config(PINCONF_U0_RXD);
|
||||
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
void lpc43_uart1_setup(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Connect UART1 into the clock source specified in board.h */
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
regval = getreg32(LPC43_BASE_UART1_CLK);
|
||||
regval &= ~BASE_UART1_CLK_CLKSEL_MASK;
|
||||
regval |= (BOARD_UART1_CLKSRC | BASE_UART1_CLK_AUTOBLOCK);
|
||||
putreg32(regval, LPC43_BASE_UART1_CLK);
|
||||
|
||||
/* Configure I/O pins (resolution of mulitple pins alternatvies
|
||||
* must be provided in the board.h file).
|
||||
*/
|
||||
|
||||
lpc43_pin_config(PINCONF_U1_TXD);
|
||||
lpc43_pin_config(PINCONF_U1_RXD);
|
||||
#ifdef CONFIG_UART1_FLOWCONTROL
|
||||
lpc43_pin_config(PINCONF_U1_CTS);
|
||||
lpc43_pin_config(PINCONF_U1_DCD);
|
||||
lpc43_pin_config(PINCONF_U1_DSR);
|
||||
lpc43_pin_config(PINCONF_U1_DTR);
|
||||
lpc43_pin_config(PINCONF_U1_RTS);
|
||||
#ifdef CONFIG_UART1_RINGINDICATOR
|
||||
lpc43_pin_config(PINCONF_U1_RI);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
void lpc43_usart2_setup(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Connect USART2 the clock source specified in board.h */
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
regval = getreg32(LPC43_BASE_USART2_CLK);
|
||||
regval &= ~BASE_USART2_CLK_CLKSEL_MASK;
|
||||
regval |= (BOARD_USART2_CLKSRC | BASE_USART2_CLK_AUTOBLOCK);
|
||||
putreg32(regval, LPC43_BASE_USART2_CLK);
|
||||
|
||||
/* Configure I/O pins (resolution of mulitple pins alternatvies
|
||||
* must be provided in the board.h file).
|
||||
*/
|
||||
|
||||
lpc43_pin_config(PINCONF_U2_TXD);
|
||||
lpc43_pin_config(PINCONF_U2_RXD);
|
||||
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
void lpc43_usart3_setup(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
irqstate_t flags;
|
||||
|
||||
/* Connect USART3 into the clock source specified in board.h */
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
regval = getreg32(LPC43_BASE_USART3_CLK);
|
||||
regval &= ~BASE_USART3_CLK_CLKSEL_MASK;
|
||||
regval |= (BOARD_USART3_CLKSRC | BASE_USART3_CLK_AUTOBLOCK);
|
||||
putreg32(regval, LPC43_BASE_USART3_CLK);
|
||||
|
||||
/* Configure I/O pins (resolution of mulitple pins alternatvies
|
||||
* must be provided in the board.h file).
|
||||
*/
|
||||
|
||||
lpc43_pin_config(PINCONF_U3_TXD);
|
||||
lpc43_pin_config(PINCONF_U3_RXD);
|
||||
|
||||
irqrestore(flags);
|
||||
};
|
||||
#endif
|
||||
|
||||
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
/****************************************************************************
|
||||
* arch/arm/src/lpc43xx/lpc43_lowputc.h
|
||||
* arch/arm/src/lpc43xx/lpc43_uart.h
|
||||
*
|
||||
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
|
|
@ -41,6 +41,8 @@
|
|||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include "chip.h"
|
||||
#include "chip/lpc43_uart.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
|
|
@ -79,6 +81,58 @@ extern "C" {
|
|||
|
||||
EXTERN void lpc43_lowsetup(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: lpc43_usart0_reset, lpc43_uart1_reset, lpc43_usart2_reset, and
|
||||
* lpc43_usart3_reset
|
||||
*
|
||||
* Description:
|
||||
* Reset a U[S]ART. These functions are used by the serial driver when a
|
||||
* U[S]ART is closed.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
EXTERN void lpc43_usart0_reset(void);
|
||||
#endif
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
EXTERN void lpc43_uart1_reset(void);
|
||||
#endif
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
EXTERN void lpc43_usart2_reset(void);
|
||||
#endif
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
EXTERN void lpc43_usart3_reset(void);
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: lpc43_usart0_setup, lpc43_uart1_setup, lpc43_usart2_setup, and
|
||||
* lpc43_usart3_setup
|
||||
*
|
||||
* Description:
|
||||
* Configure the U[S]ART. This involves:
|
||||
*
|
||||
* 1. Connecting the input clock to the U[S]ART as specified in the
|
||||
* board.h file,
|
||||
* 2. Configuring the U[S]ART pins
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_LPC43_USART0
|
||||
EXTERN void lpc43_usart0_setup(void);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_UART1
|
||||
EXTERN void lpc43_uart1_setup(void);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART2
|
||||
EXTERN void lpc43_usart2_setup(void);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_LPC43_USART3
|
||||
EXTERN void lpc43_usart3_setup(void);
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
|
|
@ -97,6 +97,21 @@
|
|||
|
||||
#define LPC43_CCLK BOARD_FCLKOUT_FREQUENCY
|
||||
|
||||
/* UART clocking ***********************************************************/
|
||||
/* Configure all U[S]ARTs to use the XTAL input frequency */
|
||||
|
||||
#define BOARD_USART0_CLKSRC BASE_USART0_CLKSEL_XTAL
|
||||
#define BOARD_USART0_BASEFREQ BOARD_XTAL_FREQUENCY
|
||||
|
||||
#define BOARD_UART1_CLKSRC BASE_UART1_CLKSEL_XTAL
|
||||
#define BOARD_UART1_BASEFREQ BOARD_XTAL_FREQUENCY
|
||||
|
||||
#define BOARD_USART2_CLKSRC BASE_USART2_CLKSEL_XTAL
|
||||
#define BOARD_USART3_BASEFREQ BOARD_XTAL_FREQUENCY
|
||||
|
||||
#define BOARD_USART3_CLKSRC BASE_USART3_CLKSEL_XTAL
|
||||
#define BOARD_USART3_BASEFREQ BOARD_XTAL_FREQUENCY
|
||||
|
||||
/* LED definitions *********************************************************/
|
||||
/* The LPC4330-Xplorer has 2 user-controllable LEDs labeled D2 an D3 in the
|
||||
* schematic and on but referred to has LED1 and LED2 here, respectively.
|
||||
|
|
|
|||
Loading…
Reference in New Issue