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STM32WL : ANALOGIN full support

pull/14245/head
jeromecoutant 2021-02-03 18:07:22 +01:00
parent ce6ff0ac5f
commit c80ac26f7a
2 changed files with 75 additions and 66 deletions
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7
targets/TARGET_STM/TARGET_STM32WL/TARGET_STM32WL55xC/TARGET_NUCLEO_WL55JC/PeripheralPins.c
View File

@ -55,11 +55,10 @@ MBED_WEAK const PinMap PinMap_ADC[] = {
{NC, NC, 0}
};
// !!! SECTION TO BE CHECKED WITH DEVICE REFERENCE MANUAL
MBED_WEAK const PinMap PinMap_ADC_Internal[] = {
// {ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)},
// {ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)},
// {ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)},
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 12, 0)},
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 13, 0)},
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 14, 0)},
{NC, NC, 0}
};

134
targets/TARGET_STM/TARGET_STM32WL/analogin_device.c
View File

@ -19,30 +19,35 @@
#include "mbed_assert.h"
#include "mbed_error.h"
#include "mbed_debug.h"
#include "mbed_wait_api.h"
#include "cmsis.h"
#include "pinmap.h"
#include "PeripheralPins.h"
void analogin_init(analogin_t *obj, PinName pin)
#if STATIC_PINMAP_READY
#define ANALOGIN_INIT_DIRECT analogin_init_direct
void analogin_init_direct(analogin_t *obj, const PinMap *pinmap)
#else
#define ANALOGIN_INIT_DIRECT _analogin_init_direct
static void _analogin_init_direct(analogin_t *obj, const PinMap *pinmap)
#endif
{
uint32_t function = (uint32_t)NC;
uint32_t function = (uint32_t)pinmap->function;
// Get the peripheral name from the pin and assign it to the object
obj->handle.Instance = (ADC_TypeDef *)pinmap->peripheral;
// ADC Internal Channels "pins" (Temperature, Vref, Vbat, ...)
// are described in PinNames.h and PeripheralPins.c
// Pin value must be between 0xF0 and 0xFF
if ((pin < 0xF0) || (pin >= 0x100)) {
if ((pinmap->pin < 0xF0) || (pinmap->pin >= 0x100)) {
// Normal channels
// Get the peripheral name from the pin and assign it to the object
obj->handle.Instance = (ADC_TypeDef *)pinmap_peripheral(pin, PinMap_ADC);
// Get the functions (adc channel) from the pin and assign it to the object
function = pinmap_function(pin, PinMap_ADC);
// Configure GPIO
pinmap_pinout(pin, PinMap_ADC);
pin_function(pinmap->pin, pinmap->function);
pin_mode(pinmap->pin, PullNone);
} else {
// Internal channels
obj->handle.Instance = (ADC_TypeDef *)pinmap_peripheral(pin, PinMap_ADC_Internal);
function = pinmap_function(pin, PinMap_ADC_Internal);
// No GPIO configuration for internal channels
}
MBED_ASSERT(obj->handle.Instance != (ADC_TypeDef *)NC);
@ -51,58 +56,77 @@ void analogin_init(analogin_t *obj, PinName pin)
obj->channel = STM_PIN_CHANNEL(function);
// Save pin number for the read function
obj->pin = pin;
obj->pin = pinmap->pin;
// Configure ADC object structures
obj->handle.State = HAL_ADC_STATE_RESET;
obj->handle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV2; // Asynchronous clock mode, input ADC clock
obj->handle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV2;
obj->handle.Init.Resolution = ADC_RESOLUTION_12B;
obj->handle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
obj->handle.Init.ScanConvMode = ADC_SCAN_DISABLE; // Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1)
obj->handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV; // On STM32L1xx ADC, overrun detection is enabled only if EOC selection is set to each conversion (or transfer by DMA enabled, this is not the case in this example).
obj->handle.Init.ScanConvMode = ADC_SCAN_DISABLE;
obj->handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
obj->handle.Init.LowPowerAutoWait = DISABLE;
obj->handle.Init.ContinuousConvMode = DISABLE; // Continuous mode disabled to have only 1 conversion at each conversion trig
obj->handle.Init.NbrOfConversion = 1; // Parameter discarded because sequencer is disabled
obj->handle.Init.DiscontinuousConvMode = DISABLE; // Parameter discarded because sequencer is disabled
//obj->handle.Init.NbrOfDiscConversion = 1; // Parameter discarded because sequencer is disabled
obj->handle.Init.ExternalTrigConv = ADC_SOFTWARE_START; // Software start to trig the 1st conversion manually, without external event
obj->handle.Init.ContinuousConvMode = DISABLE;
obj->handle.Init.NbrOfConversion = 1;
obj->handle.Init.DiscontinuousConvMode = DISABLE;
obj->handle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
obj->handle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
obj->handle.Init.DMAContinuousRequests = DISABLE;
obj->handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; // DR register is overwritten with the last conversion result in case of overrun
obj->handle.Init.OversamplingMode = DISABLE; // No oversampling
obj->handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
obj->handle.Init.LowPowerAutoPowerOff = DISABLE;
obj->handle.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_19CYCLES_5;
obj->handle.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_160CYCLES_5;
obj->handle.Init.OversamplingMode = DISABLE;
obj->handle.Init.Oversampling.Ratio = 0; // workaround
obj->handle.Init.Oversampling.RightBitShift = 0; // workaround
obj->handle.Init.Oversampling.TriggeredMode = 0; // workaround
obj->handle.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
// Enable ADC core clock
// Enable ADC clock
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_SYSCLK);
__HAL_RCC_ADC_CLK_ENABLE();
// Enable ADC conversion clock.
// Only necessary with asynchronous clock source
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_SYSCLK);
if (HAL_ADC_Init(&obj->handle) != HAL_OK) {
error("ADC initialization failed\r\n");
error("Cannot initialize ADC");
}
// ADC calibration is done only once
//if (!HAL_ADCEx_Calibration_GetValue(&obj->handle, ADC_SINGLE_ENDED)) {
// HAL_ADCEx_Calibration_Start(&obj->handle, ADC_SINGLE_ENDED);
//}
if (!HAL_ADCEx_Calibration_GetValue(&obj->handle)) {
if (HAL_ADCEx_Calibration_Start(&obj->handle) != HAL_OK) {
error("HAL_ADCEx_Calibration_Start error");
}
}
}
void analogin_init(analogin_t *obj, PinName pin)
{
int peripheral;
int function;
if ((pin < 0xF0) || (pin >= 0x100)) {
peripheral = (int)pinmap_peripheral(pin, PinMap_ADC);
function = (int)pinmap_find_function(pin, PinMap_ADC);
} else {
peripheral = (int)pinmap_peripheral(pin, PinMap_ADC_Internal);
function = (int)pinmap_find_function(pin, PinMap_ADC_Internal);
}
const PinMap static_pinmap = {pin, peripheral, function};
ANALOGIN_INIT_DIRECT(obj, &static_pinmap);
}
uint16_t adc_read(analogin_t *obj)
{
ADC_ChannelConfTypeDef sConfig = {0};
// Configure ADC channel
sConfig.Rank = ADC_REGULAR_RANK_1;
//sConfig.SamplingTime = ADC_SAMPLETIME_47CYCLES_5;
//sConfig.SingleDiff = ADC_SINGLE_ENDED;
//sConfig.OffsetNumber = ADC_OFFSET_NONE;
//sConfig.Offset = 0;
sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;
switch (obj->channel) {
case 0:
sConfig.Channel = ADC_CHANNEL_VREFINT;
//sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5; // Minimum ADC sampling time when reading the internal reference voltage is 4us
sConfig.Channel = ADC_CHANNEL_0;
break;
case 1:
sConfig.Channel = ADC_CHANNEL_1;
@ -138,55 +162,41 @@ uint16_t adc_read(analogin_t *obj)
sConfig.Channel = ADC_CHANNEL_11;
break;
case 12:
sConfig.Channel = ADC_CHANNEL_12;
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_2;
break;
case 13:
sConfig.Channel = ADC_CHANNEL_13;
sConfig.Channel = ADC_CHANNEL_VREFINT;
sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_2;
break;
case 14:
sConfig.Channel = ADC_CHANNEL_14;
break;
case 15:
sConfig.Channel = ADC_CHANNEL_15;
break;
case 16:
sConfig.Channel = ADC_CHANNEL_16;
break;
case 17:
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
//sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5; // Minimum ADC sampling time when reading the temperature is 5us
break;
case 18:
sConfig.Channel = ADC_CHANNEL_VBAT;
//sConfig.SamplingTime = ADC_SAMPLETIME_640CYCLES_5; // Minimum ADC sampling time when reading the VBAT is 12us
sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_2;
break;
default:
return 0;
}
if (HAL_ADC_ConfigChannel(&obj->handle, &sConfig) != HAL_OK) {
debug("ADC channel configuration failed\r\n");
debug("HAL_ADC_ConfigChannel error\n");
}
// Start conversion
if (HAL_ADC_Start(&obj->handle) != HAL_OK) {
debug("ADC start of conversion failed\r\n");
debug("HAL_ADC_Start error\n");
}
// Wait end of conversion and get value
uint16_t adcValue = 0;
if (HAL_ADC_PollForConversion(&obj->handle, 10) == HAL_OK) {
if (HAL_ADC_PollForConversion(&obj->handle, 100) == HAL_OK) {
adcValue = (uint16_t)HAL_ADC_GetValue(&obj->handle);
}
if (HAL_ADC_Stop(&obj->handle) != HAL_OK) {
debug("HAL_ADC_Stop failed\r\n");
}
LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE((&obj->handle)->Instance), LL_ADC_PATH_INTERNAL_NONE);
return adcValue;
}
const PinMap *analogin_pinmap()
{
return PinMap_ADC;