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simtrace UART: set INACK flag to make sure we ignore any parity error 

As a SIM card tracer, we want to remain completely passive and thus not
signal back parity errors with the ISO 7816 NACK.

The UART INACK flag does exactly that...
This commit is contained in:
Harald Welte 2011-08-15 21:42:03 +02:00
parent ea85282e09
commit a6d972c23d
1 changed files with 3 additions and 3 deletions
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6
firmware/src/simtrace/iso7816_uart.c
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@ -588,12 +588,12 @@ void iso_uart_clk_master(unsigned int master)
if (master) {
usart->US_MR = AT91C_US_USMODE_ISO7816_0 | AT91C_US_CLKS_CLOCK |
AT91C_US_CHRL_8_BITS | AT91C_US_NBSTOP_1_BIT |
AT91C_US_CKLO;
AT91C_US_CKLO | AT91C_US_INACK;
usart->US_BRGR = (0x0000 << 16) | 16;
} else {
usart->US_MR = AT91C_US_USMODE_ISO7816_0 | AT91C_US_CLKS_EXT |
AT91C_US_CHRL_8_BITS | AT91C_US_NBSTOP_1_BIT |
AT91C_US_CKLO;
AT91C_US_CKLO | AT91C_US_INACK;
usart->US_BRGR = (0x0000 << 16) | 0x0001;
}
}
@ -624,7 +624,7 @@ void iso_uart_init(void)
/* ISO7816 T=0 mode with external clock input */
usart->US_MR = AT91C_US_USMODE_ISO7816_0 | AT91C_US_CLKS_EXT |
AT91C_US_CHRL_8_BITS | AT91C_US_NBSTOP_1_BIT |
AT91C_US_CKLO;
AT91C_US_CKLO | AT91C_US_INACK;
/* Disable all interrupts */
usart->US_IDR = 0xff;