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boards/nucleo-f207zg: support for ADC #18847

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merged 2 commits into from
Nov 5, 2022
Merged

boards/nucleo-f207zg: support for ADC #18847

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cfd0183
boards/nucleo-f207zg: add ADC support
krzysztof-cabaj Nov 3, 2022
aa426bd
cpu/stm32/f2: add ADC support for f207zg
krzysztof-cabaj Nov 4, 2022
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1 change: 1 addition & 0 deletions boards/nucleo-f207zg/Kconfig
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Expand Up @@ -15,6 +15,7 @@ config BOARD_NUCLEO_F207ZG
select CPU_MODEL_STM32F207ZG

# Put defined MCU peripherals here (in alphabetical order)
select HAS_PERIPH_ADC
select HAS_PERIPH_DMA
select HAS_PERIPH_ETH
select HAS_PERIPH_I2C
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1 change: 1 addition & 0 deletions boards/nucleo-f207zg/Makefile.features
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Expand Up @@ -2,6 +2,7 @@ CPU = stm32
CPU_MODEL = stm32f207zg

# Put defined MCU peripherals here (in alphabetical order)
FEATURES_PROVIDED += periph_adc
FEATURES_PROVIDED += periph_dma
FEATURES_PROVIDED += periph_eth
FEATURES_PROVIDED += periph_i2c
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40 changes: 33 additions & 7 deletions boards/nucleo-f207zg/include/periph_conf.h
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Expand Up @@ -228,20 +228,46 @@ static const spi_conf_t spi_config[] = {
/** @} */

/**
* @name ADC configuration
* @brief ADC configuration
*
* We need to define the following fields:
* PIN, device (ADCx), channel
* Note that we do not configure all ADC channels,
* and not in the STM32F207ZG order. Instead, we
* just define 6 ADC channels, for the Nucleo
* Arduino header pins A0-A5 and the internal VBAT channel.
*
* To find appropriate device and channel find in the
* board manual, table showing pin assignments and
* information about ADC - a text similar to ADC[X]_IN[Y],
* where:
* [X] - describes used device - indexed from 0,
* for example ADC1_IN10 is device 0,
* [Y] - describes used channel - indexed from 1,
* for example ADC1_IN10 is channel 10
*
* For Nucleo-F207ZG this information is in board manual,
* Table 13, page 37.
* @{
*/
static const adc_conf_t adc_config[] = {
{GPIO_PIN(PORT_A, 3), 0, 3},
{GPIO_PIN(PORT_C, 0), 1, 0},
{GPIO_UNDEF, 0, 18}, /* VBAT */
{ .pin = GPIO_PIN(PORT_A, 3), .dev = 0, .chan = 3 }, /* ADC123_IN3 */
{ .pin = GPIO_PIN(PORT_C, 0), .dev = 0, .chan = 10 }, /* ADC123_IN10 */
{ .pin = GPIO_PIN(PORT_C, 3), .dev = 0, .chan = 13 }, /* ADC123_IN13 */
{ .pin = GPIO_PIN(PORT_F, 3), .dev = 2, .chan = 9 }, /* ADC3_IN9 */
{ .pin = GPIO_PIN(PORT_F, 5), .dev = 2, .chan = 15 }, /* ADC3_IN15 */
{ .pin = GPIO_PIN(PORT_F, 10), .dev = 2, .chan = 8 }, /* ADC3_IN8 */
{ .pin = GPIO_UNDEF, .dev = 0, .chan = 18 }, /* VBAT */
};

#define VBAT_ADC ADC_LINE(2) /**< VBAT ADC line */
/**
* @brief VBAT ADC line
*/
#define VBAT_ADC ADC_LINE(6)

/**
* @brief Number of ADC devices
*/
#define ADC_NUMOF ARRAY_SIZE(adc_config)

/** @} */

/**
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4 changes: 4 additions & 0 deletions cpu/stm32/include/periph/f2/periph_cpu.h
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Expand Up @@ -28,7 +28,11 @@ extern "C" {
/**
* @brief Available number of ADC devices
*/
#if defined (ADC3)
#define ADC_DEVS (3U)
#else
#define ADC_DEVS (2U)
#endif

#ifndef DOXYGEN

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