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Fix AnalogIn implementation on STM32G4 series

pull/13601/head
George Beckstein 2020-09-11 13:14:40 -04:00
parent 2ab7b44f10
commit e9d6c9c0b1
2 changed files with 31 additions and 49 deletions
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77
targets/TARGET_STM/TARGET_STM32G4/analogin_device.c
View File

@ -36,6 +36,7 @@
#include "mbed_error.h" #include "mbed_error.h"
#include "mbed_debug.h" #include "mbed_debug.h"
#include "PeripheralPins.h" #include "PeripheralPins.h"
#include "stm32g4xx_ll_bus.h"
#if STATIC_PINMAP_READY #if STATIC_PINMAP_READY
#define ANALOGIN_INIT_DIRECT analogin_init_direct #define ANALOGIN_INIT_DIRECT analogin_init_direct
@ -72,6 +73,7 @@ static void _analogin_init_direct(analogin_t *obj, const PinMap *pinmap)
// Configure ADC object structures // Configure ADC object structures
obj->handle.State = HAL_ADC_STATE_RESET; obj->handle.State = HAL_ADC_STATE_RESET;
memset(&obj->handle.Init, 0, sizeof(obj->handle.Init));
obj->handle.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2; obj->handle.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
obj->handle.Init.Resolution = ADC_RESOLUTION_12B; obj->handle.Init.Resolution = ADC_RESOLUTION_12B;
obj->handle.Init.DataAlign = ADC_DATAALIGN_RIGHT; obj->handle.Init.DataAlign = ADC_DATAALIGN_RIGHT;
@ -82,40 +84,48 @@ static void _analogin_init_direct(analogin_t *obj, const PinMap *pinmap)
obj->handle.Init.NbrOfConversion = 1; obj->handle.Init.NbrOfConversion = 1;
obj->handle.Init.DiscontinuousConvMode = DISABLE; obj->handle.Init.DiscontinuousConvMode = DISABLE;
obj->handle.Init.NbrOfDiscConversion = 0; obj->handle.Init.NbrOfDiscConversion = 0;
obj->handle.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T1_CC1; obj->handle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
obj->handle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; obj->handle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
obj->handle.Init.DMAContinuousRequests = DISABLE; obj->handle.Init.DMAContinuousRequests = DISABLE;
obj->handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; obj->handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
obj->handle.Init.GainCompensation = 0;
obj->handle.Init.OversamplingMode = DISABLE;
obj->handle.Init.SamplingMode = ADC_SAMPLING_MODE_NORMAL;
#if defined(ADC1) #if defined(ADC1)
if ((ADCName)obj->handle.Instance == ADC_1) { if ((ADCName)obj->handle.Instance == ADC_1) {
__HAL_RCC_ADC12_CONFIG(RCC_ADC12CLKSOURCE_SYSCLK); // TODO - which clock? LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC12); // TODO - disable clock with deinit?
// SYSCLK or PLL? __HAL_RCC_ADC12_CONFIG(RCC_ADC12CLKSOURCE_SYSCLK); // TODO - which clock?
// SYSCLK or PLL?
} }
#endif #endif
#if defined(ADC2) #if defined(ADC2)
if ((ADCName)obj->handle.Instance == ADC_2) { if ((ADCName)obj->handle.Instance == ADC_2) {
__HAL_RCC_ADC12_CONFIG(RCC_ADC12CLKSOURCE_SYSCLK); // TODO - which clock? LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC12); // TODO - disable clock with deinit?
// SYSCLK or PLL? __HAL_RCC_ADC12_CONFIG(RCC_ADC12CLKSOURCE_SYSCLK); // TODO - which clock?
// SYSCLK or PLL?
} }
#endif #endif
#if defined(ADC3) #if defined(ADC3)
if ((ADCName)obj->handle.Instance == ADC_3) { if ((ADCName)obj->handle.Instance == ADC_3) {
__HAL_RCC_ADC345_CONFIG(RCC_ADC345CLKSOURCE_SYSCLK); // TODO - which clock? LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC345); // TODO - disable clock with deinit?
// SYSCLK or PLL? __HAL_RCC_ADC345_CONFIG(RCC_ADC345CLKSOURCE_SYSCLK); // TODO - which clock?
// SYSCLK or PLL?
} }
#endif #endif
#if defined(ADC4) #if defined(ADC4)
if ((ADCName)obj->handle.Instance == ADC_4) { if ((ADCName)obj->handle.Instance == ADC_4) {
__HAL_RCC_ADC345_CONFIG(RCC_ADC345CLKSOURCE_SYSCLK); // TODO - which clock? LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC345); // TODO - disable clock with deinit?
// SYSCLK or PLL? __HAL_RCC_ADC345_CONFIG(RCC_ADC345CLKSOURCE_SYSCLK); // TODO - which clock?
// SYSCLK or PLL?
} }
#endif #endif
#if defined(ADC5) #if defined(ADC5)
if ((ADCName)obj->handle.Instance == ADC_4) { if ((ADCName)obj->handle.Instance == ADC_5) {
__HAL_RCC_ADC345_CONFIG(RCC_ADC345CLKSOURCE_SYSCLK); // TODO - which clock? LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC345); // TODO - disable clock with deinit?
// SYSCLK or PLL? __HAL_RCC_ADC345_CONFIG(RCC_ADC345CLKSOURCE_SYSCLK); // TODO - which clock?
// SYSCLK or PLL?
} }
#endif #endif
@ -153,11 +163,15 @@ uint16_t adc_read(analogin_t *obj)
// Configure ADC channel // Configure ADC channel
sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_24CYCLES_5; sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED; sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE; sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0; sConfig.Offset = 0;
/**
* TODO - what about internal channels? VBAT, VREF, Temperature?
* TODO - what about internal OP AMP channels?
*/
switch (obj->channel) { switch (obj->channel) {
case 1: case 1:
sConfig.Channel = ADC_CHANNEL_1; sConfig.Channel = ADC_CHANNEL_1;
@ -202,45 +216,16 @@ uint16_t adc_read(analogin_t *obj)
sConfig.Channel = ADC_CHANNEL_14; sConfig.Channel = ADC_CHANNEL_14;
break; break;
case 15: case 15:
if ((ADCName)obj->handle.Instance == ADC_1) { sConfig.Channel = ADC_CHANNEL_15;
sConfig.Channel = ADC_CHANNEL_VOPAMP1;
sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
} else {
sConfig.Channel = ADC_CHANNEL_15;
}
break; break;
case 16: case 16:
if ((ADCName)obj->handle.Instance == ADC_1) { sConfig.Channel = ADC_CHANNEL_16;
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR_ADC1;
sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
} else {
sConfig.Channel = ADC_CHANNEL_16;
}
break; break;
case 17: case 17:
sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5; sConfig.Channel = ADC_CHANNEL_17;
if ((ADCName)obj->handle.Instance == ADC_1) {
sConfig.Channel = ADC_CHANNEL_VBAT;
}
#if defined(ADC2)
if ((ADCName)obj->handle.Instance == ADC_2) {
sConfig.Channel = ADC_CHANNEL_VOPAMP2;
}
#endif
#if defined(ADC3)
if ((ADCName)obj->handle.Instance == ADC_3) {
sConfig.Channel = ADC_CHANNEL_VOPAMP3_ADC3;
}
#endif
#if defined(ADC4)
if ((ADCName)obj->handle.Instance == ADC_4) {
sConfig.Channel = ADC_CHANNEL_VOPAMP4;
}
#endif
break; break;
case 18: case 18:
sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5; sConfig.Channel = ADC_CHANNEL_18;
sConfig.Channel = ADC_CHANNEL_VREFINT;
break; break;
default: default:
return 0; return 0;

3
targets/targets.json
View File

@ -2469,9 +2469,6 @@
"EXTRA_IDLE_STACK_REQUIRED", "EXTRA_IDLE_STACK_REQUIRED",
"MBED_TICKLESS" "MBED_TICKLESS"
], ],
"device_has_remove": [
"ANALOGIN"
],
"overrides": { "overrides": {
"lpticker_delay_ticks": 0 "lpticker_delay_ticks": 0
}, },