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Merge pull request #7009 from kbumsik/io1-fix

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SAMD21/SAMR21: Add more ADC lines
This commit is contained in:
Alexandre Abadie 2017-05-07 11:32:42 +02:00 committed by GitHub
commit e18acd2078
4 changed files with 51 additions and 15 deletions
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30
boards/samd21-xpro/include/periph_conf.h
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@ -271,34 +271,34 @@ static const spi_conf_t spi_config[] = {
* @name ADC Configuration
* @{
*/
#define ADC_NUMOF (1U)
#define ADC_0_EN 1
#define ADC_MAX_CHANNELS 14
/* ADC 0 device configuration */
#define ADC_0_DEV ADC
#define ADC_0_IRQ ADC_IRQn
#define ADC_0_CHANNELS (3U)
/**
* @brief ADC Channel Configuration
*/
typedef struct {
gpio_t pin; /**< ADC channel pin */
uint32_t muxpos; /**< ADC channel pin multiplexer value */
} adc_channel_t;
/* ADC 0 Default values */
#define ADC_0_CLK_SOURCE 0 /* GCLK_GENERATOR_0 */
#define ADC_0_PRESCALER ADC_CTRLB_PRESCALER_DIV512
static const adc_channel_t adc_channels[] = {
/* port, pin, muxpos */
{GPIO_PIN(PA, 10), ADC_INPUTCTRL_MUXPOS_PIN18}, /* EXT2, pin 3 */
{GPIO_PIN(PA, 11), ADC_INPUTCTRL_MUXPOS_PIN19}, /* EXT2, pin 4 */
{GPIO_PIN(PA, 2), ADC_INPUTCTRL_MUXPOS_PIN0} /* EXT3, pin 3 */
};
#define ADC_0_NEG_INPUT ADC_INPUTCTRL_MUXNEG_GND
#define ADC_0_GAIN_FACTOR_DEFAULT ADC_INPUTCTRL_GAIN_1X
#define ADC_0_REF_DEFAULT ADC_REFCTRL_REFSEL_INT1V
static const adc_conf_chan_t adc_channels[] = {
/* port, pin, muxpos */
{GPIO_PIN(PB, 0), ADC_INPUTCTRL_MUXPOS_PIN8}, /* EXT1, pin 3 */
{GPIO_PIN(PB, 1), ADC_INPUTCTRL_MUXPOS_PIN9}, /* EXT1, pin 4 */
{GPIO_PIN(PA, 10), ADC_INPUTCTRL_MUXPOS_PIN18}, /* EXT2, pin 3 */
{GPIO_PIN(PA, 11), ADC_INPUTCTRL_MUXPOS_PIN19}, /* EXT2, pin 4 */
{GPIO_PIN(PA, 2), ADC_INPUTCTRL_MUXPOS_PIN0}, /* EXT3, pin 3 */
{GPIO_PIN(PA, 3), ADC_INPUTCTRL_MUXPOS_PIN1} /* EXT3, pin 4. This is
disconnected by default. PA3 is connected to USB_ID.
Move PA03 SELECT jumper to EXT3 to connect. */
};
#define ADC_0_CHANNELS (6U)
#define ADC_NUMOF ADC_0_CHANNELS
/** @} */
#ifdef __cplusplus

1
boards/samr21-xpro/Makefile.features
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@ -1,4 +1,5 @@
# Put defined MCU peripherals here (in alphabetical order)
FEATURES_PROVIDED += periph_adc
FEATURES_PROVIDED += periph_cpuid
FEATURES_PROVIDED += periph_gpio
FEATURES_PROVIDED += periph_i2c

27
boards/samr21-xpro/include/periph_conf.h
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@ -240,6 +240,33 @@ static const spi_conf_t spi_config[] = {
#define RTT_RUNSTDBY (1) /* Keep RTT running in sleep states */
/** @} */
/**
* @name ADC Configuration
* @{
*/
#define ADC_0_EN 1
#define ADC_MAX_CHANNELS 14
/* ADC 0 device configuration */
#define ADC_0_DEV ADC
#define ADC_0_IRQ ADC_IRQn
/* ADC 0 Default values */
#define ADC_0_CLK_SOURCE 0 /* GCLK_GENERATOR_0 */
#define ADC_0_PRESCALER ADC_CTRLB_PRESCALER_DIV512
#define ADC_0_NEG_INPUT ADC_INPUTCTRL_MUXNEG_GND
#define ADC_0_GAIN_FACTOR_DEFAULT ADC_INPUTCTRL_GAIN_1X
#define ADC_0_REF_DEFAULT ADC_REFCTRL_REFSEL_INT1V
static const adc_conf_chan_t adc_channels[] = {
/* port, pin, muxpos */
{GPIO_PIN(PA, 6), ADC_INPUTCTRL_MUXPOS_PIN6}, /* EXT1, pin 3 */
{GPIO_PIN(PA, 7), ADC_INPUTCTRL_MUXPOS_PIN7}, /* EXT1, pin 4 */
};
#define ADC_0_CHANNELS (2U)
#define ADC_NUMOF ADC_0_CHANNELS
/** @} */
#ifdef __cplusplus
}
#endif

8
cpu/samd21/include/periph_cpu.h
View File

@ -99,6 +99,14 @@ typedef struct {
uart_txpad_t tx_pad; /**< pad selection for TX line */
} uart_conf_t;
/**
* @brief ADC Channel Configuration
*/
typedef struct {
gpio_t pin; /**< ADC channel pin */
uint32_t muxpos; /**< ADC channel pin multiplexer value */
} adc_conf_chan_t;
/**
* @brief Return the numeric id of a SERCOM device derived from its address
*