Fix logic error in configuring PGA11x devices in a daisy chain. Add logic interface with individual PGA11x chips in a daisy-chain
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4979 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
parent
15d84f957f
commit
856152a1dd
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@ -65,16 +65,16 @@
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#define PGA11X_CMD_READ 0x6a00
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#define PGA11X_CMD_WRITE 0x2a00
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#define PGA11X_CMA_NOOP 0x0000
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#define PGA11X_CMA_SDN_DIS 0xe100
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#define PGA11X_CMA_SDN_EN 0xe1f1
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#define PGA11X_CMD_NOOP 0x0000
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#define PGA11X_CMD_SDN_DIS 0xe100
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#define PGA11X_CMD_SDN_EN 0xe1f1
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/* SPI Daisy-Chain Commands (PGA116/PGA117) */
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#define PGA11X_DCCMD_SELECTOR 0x8000
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#define PGA11X_DCCMD_NOOP (PGA11X_DCCMD_SELECTOR | PGA11X_CMA_NOOP)
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#define PGA11X_DCCMA_SDN_DIS (PGA11X_DCCMD_SELECTOR | PGA11X_CMA_SDN_DIS)
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#define PGA11X_DCCMA_SDN_EN (PGA11X_DCCMD_SELECTOR | PGA11X_CMA_SDN_EN)
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#define PGA11X_DCCMD_NOOP (PGA11X_DCCMD_SELECTOR | PGA11X_CMD_NOOP)
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#define PGA11X_DCCMD_SDN_DIS (PGA11X_DCCMD_SELECTOR | PGA11X_CMD_SDN_DIS)
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#define PGA11X_DCCMD_SDN_EN (PGA11X_DCCMD_SELECTOR | PGA11X_CMD_SDN_EN)
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#define PGA11X_DCCMD_READ (PGA11X_DCCMD_SELECTOR | PGA11X_CMD_READ)
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#define PGA11X_DCCMD_WRITE (PGA11X_DCCMD_SELECTOR | PGA11X_CMD_WRITE)
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@ -101,7 +101,7 @@
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#define SPI_DUMMY 0xff
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/* Debug ****************************************************************************/
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/* Debug ********************************************************************/
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/* Check if (non-standard) SPI debug is enabled */
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#ifndef CONFIG_DEBUG
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@ -110,9 +110,9 @@
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#endif
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#ifdef CONFIG_DEBUG_SPI
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# define spidbg lldbg
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# define spidbg dbg
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# ifdef CONFIG_DEBUG_VERBOSE
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# define spivdbg lldbg
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# define spivdbg dbg
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# else
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# define spivdbg(x...)
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# endif
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@ -245,7 +245,7 @@ static void pga11x_send16(FAR struct spi_dev_s *spi, uint16_t word)
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*
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* Send the MS byte first. Then the LS byte.
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*/
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SPI_SEND(spi, word >> 8);
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SPI_SEND(spi, word & 0xff);
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}
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@ -277,7 +277,7 @@ static uint16_t pga11x_recv16(FAR struct spi_dev_s *spi)
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*
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* Send a dummy byte and receive MS byte first. Then the LS byte.
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*/
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msb = SPI_SEND(spi, SPI_DUMMY);
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lsb = SPI_SEND(spi, SPI_DUMMY);
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spivdbg("Received %02x %02x\n", msb, lsb);
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@ -293,6 +293,9 @@ static uint16_t pga11x_recv16(FAR struct spi_dev_s *spi)
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*
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* Input Parameters:
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* spi - PGA11X driver instance
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* cmd - PGA11X command (non-daisy chained)
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* u1cmd - PGA11X U1 command (daisy chained)
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* u2cmd - PGA11X U2 command (daisy chained)
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*
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* Returned Value:
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* The received 16-bit value
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@ -316,17 +319,18 @@ static void pga11x_write(FAR struct spi_dev_s *spi, uint16_t cmd)
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pga11x_unlock(spi);
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}
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#else
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static void pga11x_write(FAR struct spi_dev_s *spi, uint16_t u1cmd, uint16_t u2cmd)
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{
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spivdbg("cmd %04x\n", cmd);
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spivdbg("U1 cmd: %04x U2 cmd: %04x\n", u1cmd, u2cmd);
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/* Lock, select, send the 16-bit command, the 16-bit daisy-chain command,
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* de-select, and un-lock.
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/* Lock, select, send the U2 16-bit command, the U1 16-bit command, de-select,
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* and un-lock.
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*/
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pga11x_lock(spi);
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SPI_SELECT(spi, SPIDEV_MUX, true);
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pga11x_send16(spi, cmd);
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pga11x_send16(spi, cmd | PGA11X_DCCMD_SELECTOR);
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pga11x_send16(spi, u2cmd);
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pga11x_send16(spi, u1cmd);
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SPI_SELECT(spi, SPIDEV_MUX, false);
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pga11x_unlock(spi);
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}
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@ -340,7 +344,7 @@ static void pga11x_write(FAR struct spi_dev_s *spi, uint16_t cmd)
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* Name: pga11x_initialize
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*
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* Description:
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* Initialize the PGA117 amplifier/multiplexer.
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* Initialize the PGA117 amplifier/multiplexer(s).
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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@ -368,7 +372,7 @@ PGA11X_HANDLE pga11x_initialize(FAR struct spi_dev_s *spi)
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* as the handle. This gives us a place to extend functionality in the
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* future if neccessary.
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*/
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return (PGA11X_HANDLE)spi;
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}
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@ -376,61 +380,149 @@ PGA11X_HANDLE pga11x_initialize(FAR struct spi_dev_s *spi)
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* Name: pga11x_select
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*
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* Description:
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* Select an input channel and gain.
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* Select an input channel and gain for all PGA11xs.
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*
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* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_select() configures
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* both chips in the daisy-chain. pga11x_uselect() is provided to support
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* configuring the parts in the daisychain independently.
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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* channel - See the PGA11X_CHAN_* definitions above
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* gain - See the PGA11X_GAIN_* definitions above
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* spi - An SPI "bottom half" device driver instance
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* settings - New channel and gain settings
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*
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* Returned Value:
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* Zero on sucess; a negated errno value on failure.
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*
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****************************************************************************/
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int pga11x_select(PGA11X_HANDLE handle, uint8_t channel, uint8_t gain)
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int pga11x_select(PGA11X_HANDLE handle,
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FAR const struct pga11x_settings_s *settings)
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{
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#ifndef CONFIG_PGA11X_DAISYCHAIN
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FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
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uint16_t cmd;
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spivdbg("channel: %d gain: %d\n");
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DEBUGASSERT(handle);
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DEBUGASSERT(handle && settings);
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spivdbg("channel: %d gain: %d\n", settings->channel, settings->gain);
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/* Format the command */
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cmd = PGA11X_CMD_WRITE |
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(channel << PGA11X_CHAN_SHIFT) |
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(gain << PGA11X_GAIN_SHIFT);
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((uint16_t)settings->channel << PGA11X_CHAN_SHIFT) |
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((uint16_t)settings->gain << PGA11X_GAIN_SHIFT);
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/* Lock the bus and send the command */
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/* Send the command */
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pga11x_write(spi, cmd);
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return OK;
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#else
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FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
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uint16_t u1cmd;
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uint16_t u2cmd;
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DEBUGASSERT(handle && settings);
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spivdbg("U1 channel: %d gain: %d\n", settings->u1.channel, settings->u1.gain);
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spivdbg("U1 channel: %d gain: %d\n", settings->u1.channel, settings->u1.gain);
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/* Format the commands */
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u1cmd = PGA11X_CMD_WRITE |
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((uint16_t)settings->u1.channel << PGA11X_CHAN_SHIFT) |
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((uint16_t)settings->u1.gain << PGA11X_GAIN_SHIFT);
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u2cmd = PGA11X_DCCMD_WRITE |
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((uint16_t)settings->u2.channel << PGA11X_CHAN_SHIFT) |
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((uint16_t)settings->u2.gain << PGA11X_GAIN_SHIFT);
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/* Send the command */
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pga11x_write(spi, u1cmd, u2cmd);
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return OK;
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#endif
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}
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/****************************************************************************
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* Name: pga11x_uselect
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*
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* Description:
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* Select an input channel and gain for one PGA11x.
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*
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* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_uselect() configures
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* one chips in the daisy-chain.
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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* pos - Position of the chip in the daisy chain (0 or 1)
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* settings - New channel and gain settings
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*
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* Returned Value:
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* Zero on sucess; a negated errno value on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_PGA11X_DAISYCHAIN
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int pga11x_uselect(PGA11X_HANDLE handle, int pos,
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FAR const struct pga11x_usettings_s *settings)
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{
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FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
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uint16_t u1cmd;
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uint16_t u2cmd;
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spivdbg("channel: %d gain: %d\n", settings->channel, settings->gain);
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DEBUGASSERT(handle);
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/* Format the commands */
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if (pos == 0)
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{
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u1cmd = PGA11X_CMD_WRITE |
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((uint16_t)settings->channel << PGA11X_CHAN_SHIFT) |
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((uint16_t)settings->gain << PGA11X_GAIN_SHIFT);
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u2cmd = PGA11X_DCCMD_NOOP;
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}
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else /* if (pos == 1) */
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{
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u1cmd = PGA11X_CMD_NOOP;
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u2cmd = PGA11X_DCCMD_WRITE |
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((uint16_t)settings->channel << PGA11X_CHAN_SHIFT) |
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((uint16_t)settings->gain << PGA11X_GAIN_SHIFT);
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}
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/* Send the command */
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pga11x_write(spi, u1cmd, u2cmd);
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return OK;
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}
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#endif
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/****************************************************************************
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* Name: pga11x_read
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*
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* Description:
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* Read from the PGA117 amplifier/multiplexer.
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* Read from all PGA117 amplifier/multiplexers.
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*
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* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_read() reads from
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* both chips in the daisy-chain. pga11x_uread() is provided to support
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* accessing the parts independently.
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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* spi - An SPI "bottom half" device driver instance
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* settings - Returned channel and gain settings
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*
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* Returned Value:
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* 16-bit value read from the device (32-bits in daisy chain mode)
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* Zero on sucess; a negated errno value on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_PGA11X_DAISYCHAIN
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uint32_t pga11x_read(PGA11X_HANDLE handle)
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int pga11x_read(PGA11X_HANDLE handle, FAR struct pga11x_settings_s *settings)
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{
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#ifdef CONFIG_PGA11X_DAISYCHAIN
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FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
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uint16_t msvalue;
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uint16_t lsvalue;
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uint16_t u1value;
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uint16_t u2value;
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spivdbg("Entry\n");
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DEBUGASSERT(handle);
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DEBUGASSERT(handle && settings);
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/* Lock the bus and read the configuration */
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@ -450,17 +542,20 @@ uint32_t pga11x_read(PGA11X_HANDLE handle)
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/* Re-select, get the returned values, de-select, and unlock */
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SPI_SELECT(spi, SPIDEV_MUX, true);
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msvalue = pga11x_recv16(spi);
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mssvalue = pga11x_recv16(spi);
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u2value = pga11x_recv16(spi);
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u1value = pga11x_recv16(spi);
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SPI_SELECT(spi, SPIDEV_MUX, false);
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pga11x_unlock(spi);
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spivdbg("Returning %04x %04x\n", msvalue, lsvalue);
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return (uint32_t)msvalue << 16 | (uint32_t)lsvalue;
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}
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/* Decode the returned value */
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spivdbg("Returning %04x %04x\n", u2value, u1value);
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settings->u1.channel = (uint8_t)((u1value & PGA11X_CHAN_MASK) >> PGA11X_CHAN_SHIFT);
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settings->u1.gain = (uint8_t)((u1value & PGA11X_GAIN_MASK) >> PGA11X_GAIN_SHIFT);
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settings->u2.channel = (uint8_t)((u2value & PGA11X_CHAN_MASK) >> PGA11X_CHAN_SHIFT);
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settings->u2.gain = (uint8_t)((u2value & PGA11X_GAIN_MASK) >> PGA11X_GAIN_SHIFT);
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return OK;
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#else
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uint16_t pga11x_read(PGA11X_HANDLE handle)
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{
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FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
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uint16_t value;
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@ -487,43 +582,67 @@ uint16_t pga11x_read(PGA11X_HANDLE handle)
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SPI_SELECT(spi, SPIDEV_MUX, false);
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pga11x_unlock(spi);
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/* Decode the returned value */
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spivdbg("Returning: %04x\n", value);
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return value;
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}
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settings->channel = (uint8_t)((value & PGA11X_CHAN_MASK) >> PGA11X_CHAN_SHIFT);
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settings->gain = (uint8_t)((value & PGA11X_GAIN_MASK) >> PGA11X_GAIN_SHIFT);
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return OK;
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#endif
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}
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/****************************************************************************
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* Name: pga11x_noop
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* Name: pga11x_uread
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*
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* Description:
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* Perform PGA11x no-operation.
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* Read from one PGA117 amplifier/multiplexer.
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*
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* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_read() reads
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* the parts independently.
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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* spi - An SPI "bottom half" device driver instance
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* pos - Position of the chip in the daisy chain (0 or 1)
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* settings - Returned channel and gain settings
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*
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* Returned Value:
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* Zero on sucess; a negated errno value on failure.
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*
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****************************************************************************/
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int pga11x_noop(PGA11X_HANDLE handle)
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#ifdef CONFIG_PGA11X_DAISYCHAIN
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int pga11x_uread(PGA11X_HANDLE handle, int pos,
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FAR struct pga11x_usettings_s *settings)
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{
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FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
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struct pga11x_settings_s both;
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int ret = pga11x_read(handle, &both);
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if (ret == OK)
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{
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if (pos == 0)
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{
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settings->channel = both.u1.channel;
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settings->gain = both.u1.gain;
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}
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else /* if (pos == 1) */
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{
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settings->channel = both.u2.channel;
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settings->gain = both.u2.gain;
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}
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}
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spivdbg("Entry\n");
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DEBUGASSERT(handle);
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/* Lock the bus and send the NOOP command */
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pga11x_write(spi, PGA11X_CMA_NOOP);
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return OK;
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return ret;
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}
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#endif
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/****************************************************************************
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* Name: pga11x_shutdown
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*
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* Description:
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* Put the PGA11x in shutdown down mode.
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* Put all PGA11x's in shutdown down mode.
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*
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* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_shutdown() controls
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* both chips in the daisy-chain. pga11x_ushutdown() is provided to
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* control the parts independently.
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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@ -540,17 +659,66 @@ int pga11x_shutdown(PGA11X_HANDLE handle)
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spivdbg("Entry\n");
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DEBUGASSERT(handle);
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/* Lock the bus and enter shutdown mode by issuing an SDN_EN command */
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/* Enter shutdown mode by issuing an SDN_EN command */
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pga11x_write(spi, PGA11X_CMA_SDN_EN);
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#ifdef CONFIG_PGA11X_DAISYCHAIN
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pga11x_write(spi, PGA11X_CMD_SDN_EN, PGA11X_DCCMD_SDN_EN);
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#else
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pga11x_write(spi, PGA11X_CMD_SDN_EN);
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#endif
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return OK;
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}
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/****************************************************************************
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* Name: pga11x_ushutdown
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*
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* Description:
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* Put one PGA11x in shutdown down mode.
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*
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* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_ushutdown() is
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* provided to shutdown the parts independently.
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*
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* Input Parameters:
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* spi - An SPI "bottom half" device driver instance
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* pos - Position of the chip in the daisy chain (0 or 1)
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*
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* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
int pga11x_ushutdown(PGA11X_HANDLE handle, int pos)
|
||||
{
|
||||
FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
|
||||
|
||||
spivdbg("Entry\n");
|
||||
DEBUGASSERT(handle);
|
||||
|
||||
/* Enter shutdown mode by issuing an SDN_EN command */
|
||||
|
||||
if (pos == 0)
|
||||
{
|
||||
pga11x_write(spi, PGA11X_CMD_SDN_EN, PGA11X_DCCMD_NOOP);
|
||||
}
|
||||
else
|
||||
{
|
||||
pga11x_write(spi, PGA11X_CMD_NOOP, PGA11X_DCCMD_SDN_EN);
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_enable
|
||||
*
|
||||
* Description:
|
||||
* Take the PGA11x out of shutdown down mode.
|
||||
* Take all PGA11x's out of shutdown down mode.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_enable() controls
|
||||
* both chips in the daisy-chain. pga11x_uenable() is provided to
|
||||
* control the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
|
|
@ -572,9 +740,54 @@ int pga11x_enable(PGA11X_HANDLE handle)
|
|||
* command or by any valid Write command
|
||||
*/
|
||||
|
||||
pga11x_write(spi, PGA11X_CMA_SDN_DIS);
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
pga11x_write(spi, PGA11X_CMD_SDN_DIS, PGA11X_DCCMD_SDN_DIS);
|
||||
#else
|
||||
pga11x_write(spi, PGA11X_CMD_SDN_DIS);
|
||||
#endif
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_uenable
|
||||
*
|
||||
* Description:
|
||||
* Take one PGA11x out of shutdown down mode.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_uenable() is
|
||||
* provided to enable the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* pos - Position of the chip in the daisy chain (0 or 1)
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
int pga11x_uenable(PGA11X_HANDLE handle, int pos)
|
||||
{
|
||||
FAR struct spi_dev_s *spi = (FAR struct spi_dev_s *)handle;
|
||||
|
||||
spivdbg("Entry\n");
|
||||
DEBUGASSERT(handle);
|
||||
|
||||
/* Enter shutdown mode by issuing an SDN_EN command */
|
||||
|
||||
if (pos == 0)
|
||||
{
|
||||
pga11x_write(spi, PGA11X_CMD_SDN_DIS, PGA11X_DCCMD_NOOP);
|
||||
}
|
||||
else
|
||||
{
|
||||
pga11x_write(spi, PGA11X_CMD_NOOP, PGA11X_DCCMD_SDN_DIS);
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_ADC && CONFIG_ADC_PGA11X */
|
||||
|
||||
|
|
|
|||
|
|
@ -76,7 +76,7 @@
|
|||
* CONFIG_SPI_OWNBUS -- If the PGA117 is enabled, this must be set to 'y'
|
||||
* if the PGA117 is the only device on the SPI bus;
|
||||
* CONFIG_DEBUG_SPI -- With CONFIG_DEBUG and CONFIG_DEBUG_VERBOSE,
|
||||
* this will enable debug output from the PGA117 driver.
|
||||
* this will enable debug output from the PGA117 driver.
|
||||
*/
|
||||
|
||||
#ifndef CONFIG_PGA11X_SPIFREQUENCY
|
||||
|
|
@ -132,39 +132,6 @@
|
|||
#define PGA11X_CHAN_CAL3 (14) /* CAL3: connects to 0.1VCAL */
|
||||
#define PGA11X_CHAN_CAL4 (15) /* CAL4: connects to VREF */
|
||||
|
||||
/* These macros may be used to decode the value returned by pga11x_read() */
|
||||
|
||||
|
||||
#define PGA11X_GAIN_SHIFT (4) /* B*/
|
||||
#define PGA11X_GAIN_MASK (15 << PGA11X_GAIN_SHIFT)
|
||||
|
||||
/* Write command Mux Channel Selection Bits
|
||||
*
|
||||
* The PGA112/PGA113 have a two-channel input MUX; the PGA116/PGA117 have a
|
||||
* 10-channel input MUX.
|
||||
*/
|
||||
|
||||
#ifndef CONFIG_PGA11X_DAISYCHAIN
|
||||
/* Bits 0-3: Channel Selection Bits
|
||||
* Bits 4-7: Gain Selection Bits
|
||||
*/
|
||||
|
||||
# define PGA11X_CHAN(value) ((uint16_t)value & 0x000f)
|
||||
# define PGA11X_GAIN(value) (((uint16_t)value >> 4) & 0x000f)
|
||||
|
||||
#else
|
||||
/* Bits 0-3: U1 Channel Selection Bits
|
||||
* Bits 4-7: U1 Gain Selection Bits
|
||||
* Bits 16-19: U2 Channel Selection Bits
|
||||
* Bits 20-23: U2 Gain Selection Bits
|
||||
*/
|
||||
|
||||
# define PGA11X_U1_CHAN(value) ((uint32_t)value & 0x0000000f)
|
||||
# define PGA11X_U1_GAIN(value) (((uint32_t)value >> 4) & 0x0000000f)
|
||||
# define PGA11X_U2_CHAN(value) (((uint32_t)value >> 16) & 0x0000000f)
|
||||
# define PGA11X_U2_GAIN(value) (((uint32_t)value >> 20) & 0x0000000f)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
|
@ -173,6 +140,42 @@
|
|||
|
||||
typedef FAR void *PGA11X_HANDLE;
|
||||
|
||||
/* Settings for one device in a daisy-chain */
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
struct pga11x_usettings_s
|
||||
{
|
||||
uint8_t channel; /* See PGA11X_CHAN_* definitions */
|
||||
uint8_t gain; /* See PGA11X_GAIN_* definitions */
|
||||
};
|
||||
#endif
|
||||
|
||||
/* These structures are used to encode gain and channel settings. This
|
||||
* includes both devices in the case of a daisy-chained configuration.
|
||||
* NOTE: This this logic is currently limited to only 2 devices in the
|
||||
* daisy-chain.
|
||||
*/
|
||||
|
||||
struct pga11x_settings_s
|
||||
{
|
||||
#ifndef CONFIG_PGA11X_DAISYCHAIN
|
||||
uint8_t channel; /* See PGA11X_CHAN_* definitions */
|
||||
uint8_t gain; /* See PGA11X_GAIN_* definitions */
|
||||
#else
|
||||
struct
|
||||
{
|
||||
uint8_t channel; /* See PGA11X_CHAN_* definitions */
|
||||
uint8_t gain; /* See PGA11X_GAIN_* definitions */
|
||||
} u1;
|
||||
|
||||
struct
|
||||
{
|
||||
uint8_t channel; /* See PGA11X_CHAN_* definitions */
|
||||
uint8_t gain; /* See PGA11X_GAIN_* definitions */
|
||||
} u2;
|
||||
#endif
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
|
@ -188,7 +191,7 @@ extern "C" {
|
|||
* Name: pga11x_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the PGA117 amplifier/multiplexer.
|
||||
* Initialize the PGA117 amplifier/multiplexer(s).
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
|
|
@ -206,61 +209,103 @@ EXTERN PGA11X_HANDLE pga11x_initialize(FAR struct spi_dev_s *spi);
|
|||
* Name: pga11x_select
|
||||
*
|
||||
* Description:
|
||||
* Select an input channel and gain.
|
||||
* Select an input channel and gain for all PGA11xs.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_select() configures
|
||||
* both chips in the daisy-chain. pga11x_uselect() is provided to support
|
||||
* configuring the parts in the daisychain independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* channel - See the PGA11X_CHAN_* definitions above
|
||||
* gain - See the PGA11X_GAIN_* definitions above
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* settings - New channel and gain settings
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
EXTERN int pga11x_select(PGA11X_HANDLE handle, uint8_t channel, uint8_t gain);
|
||||
EXTERN int pga11x_select(PGA11X_HANDLE handle,
|
||||
FAR const struct pga11x_settings_s *settings);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_uselect
|
||||
*
|
||||
* Description:
|
||||
* Select an input channel and gain for one PGA11x.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_uselect() configures
|
||||
* one chips in the daisy-chain.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* pos - Position of the chip in the daisy chain (0 or 1)
|
||||
* settings - New channel and gain settings
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
EXTERN int pga11x_uselect(PGA11X_HANDLE handle, int pos,
|
||||
FAR const struct pga11x_usettings_s *settings);
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_read
|
||||
*
|
||||
* Description:
|
||||
* Read from the PGA117 amplifier/multiplexer.
|
||||
* Read from all PGA117 amplifier/multiplexers.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_read() reads from
|
||||
* both chips in the daisy-chain. pga11x_uread() is provided to support
|
||||
* accessing the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
*
|
||||
* Returned Value:
|
||||
* 16-bit value read from the device (32-bits in daisy chain mode)
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
EXTERN uint32_t pga11x_read(PGA11X_HANDLE handle);
|
||||
#else
|
||||
EXTERN uint16_t pga11x_read(PGA11X_HANDLE handle);
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_noop
|
||||
*
|
||||
* Description:
|
||||
* Perform PGA11x no-operation.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* settings - Returned channel and gain settings
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
EXTERN int pga11x_noop(PGA11X_HANDLE handle);
|
||||
EXTERN int pga11x_read(PGA11X_HANDLE handle,
|
||||
FAR struct pga11x_settings_s *settings);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_uread
|
||||
*
|
||||
* Description:
|
||||
* Read from one PGA117 amplifier/multiplexer.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_read() reads
|
||||
* the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* pos - Position of the chip in the daisy chain (0 or 1)
|
||||
* settings - Returned channel and gain settings
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
EXTERN int pga11x_uread(PGA11X_HANDLE handle, int pos,
|
||||
FAR struct pga11x_usettings_s *settings);
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_shutdown
|
||||
*
|
||||
* Description:
|
||||
* Put the PGA11x in shutdown down mode.
|
||||
* Put all PGA11x;'s in shutdown down mode.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_shutdown() controls
|
||||
* both chips in the daisy-chain. pga11x_ushutdown() is provided to
|
||||
* control the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
|
|
@ -272,11 +317,37 @@ EXTERN int pga11x_noop(PGA11X_HANDLE handle);
|
|||
|
||||
EXTERN int pga11x_shutdown(PGA11X_HANDLE handle);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_ushutdown
|
||||
*
|
||||
* Description:
|
||||
* Put one PGA11x in shutdown down mode.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_ushutdown() is
|
||||
* provided to shutdown the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* pos - Position of the chip in the daisy chain (0 or 1)
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
EXTERN int pga11x_ushutdown(PGA11X_HANDLE handle, int pos);
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_enable
|
||||
*
|
||||
* Description:
|
||||
* Take the PGA11x out of shutdown down mode.
|
||||
* Take all PGA11x's out of shutdown down mode.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_enable() controls
|
||||
* both chips in the daisy-chain. pga11x_uenable() is provided to
|
||||
* control the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
|
|
@ -288,6 +359,28 @@ EXTERN int pga11x_shutdown(PGA11X_HANDLE handle);
|
|||
|
||||
EXTERN int pga11x_enable(PGA11X_HANDLE handle);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: pga11x_uenable
|
||||
*
|
||||
* Description:
|
||||
* Take one PGA11x out of shutdown down mode.
|
||||
*
|
||||
* If CONFIG_PGA11X_DAISYCHAIN is defined, then pga11x_uenable() is
|
||||
* provided to enable the parts independently.
|
||||
*
|
||||
* Input Parameters:
|
||||
* spi - An SPI "bottom half" device driver instance
|
||||
* pos - Position of the chip in the daisy chain (0 or 1)
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on sucess; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_PGA11X_DAISYCHAIN
|
||||
EXTERN int pga11x_uenable(PGA11X_HANDLE handle, int pos);
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue