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STM32F2 Internal ADC channels rework 

Internal ADC pin are now out of PinMap_ADC array
pull/4209/head
jeromecoutant 2017-04-11 11:16:46 +02:00 committed by adbridge
parent c23fea7de0
commit 74c2273f42
2 changed files with 26 additions and 12 deletions
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4
targets/TARGET_STM/TARGET_STM32F2/TARGET_NUCLEO_F207ZG/PeripheralPins.c
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@ -87,6 +87,10 @@ const PinMap PinMap_ADC[] = {
{PF_8, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC3_IN6 {PF_8, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC3_IN6
{PF_9, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC3_IN7 {PF_9, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC3_IN7
{PF_10, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 8, 0)}, // ADC3_IN8 {PF_10, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 8, 0)}, // ADC3_IN8
{NC, NC, 0}
};
const PinMap PinMap_ADC_Internal[] = {
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // See in analogin_api.c the correct ADC channel used {ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // See in analogin_api.c the correct ADC channel used
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // See in analogin_api.c the correct ADC channel used {ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // See in analogin_api.c the correct ADC channel used
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // See in analogin_api.c the correct ADC channel used {ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // See in analogin_api.c the correct ADC channel used

28
targets/TARGET_STM/TARGET_STM32F2/analogin_api.c
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@ -40,6 +40,9 @@ ADC_HandleTypeDef AdcHandle;
void analogin_init(analogin_t *obj, PinName pin) void analogin_init(analogin_t *obj, PinName pin)
{ {
uint32_t function = (uint32_t)NC;
obj->adc = (ADCName)NC;
#if defined(ADC1) #if defined(ADC1)
static int adc1_inited = 0; static int adc1_inited = 0;
#endif #endif
@ -49,20 +52,27 @@ void analogin_init(analogin_t *obj, PinName pin)
#if defined(ADC3) #if defined(ADC3)
static int adc3_inited = 0; static int adc3_inited = 0;
#endif #endif
// 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)) {
// Normal channels
// Get the peripheral name from the pin and assign it to the object // Get the peripheral name from the pin and assign it to the object
obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC); obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
MBED_ASSERT(obj->adc != (ADCName)NC);
// Get the functions (adc channel) from the pin and assign it to the object // Get the functions (adc channel) from the pin and assign it to the object
uint32_t function = pinmap_function(pin, PinMap_ADC); function = pinmap_function(pin, PinMap_ADC);
MBED_ASSERT(function != (uint32_t)NC); // Configure GPIO
obj->channel = STM_PIN_CHANNEL(function);
// Configure GPIO excepted for internal channels (Temperature, Vref, Vbat, ...)
// ADC Internal Channels "pins" are described in PinNames.h and must have a value >= 0xF0
if (pin < 0xF0) {
pinmap_pinout(pin, PinMap_ADC); pinmap_pinout(pin, PinMap_ADC);
} else {
// Internal channels
obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC_Internal);
function = pinmap_function(pin, PinMap_ADC_Internal);
// No GPIO configuration for internal channels
} }
MBED_ASSERT(obj->adc != (ADCName)NC);
MBED_ASSERT(function != (uint32_t)NC);
obj->channel = STM_PIN_CHANNEL(function);
// Save pin number for the read function // Save pin number for the read function
obj->pin = pin; obj->pin = pin;