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Merge pull request #2924 from bcostm/adcintch_F2 

STM32F2xx - Add support of ADC internal channels (temperature, VRef, VBat)
pull/2967/head
Sam Grove 2016-10-07 11:33:11 -05:00 committed by GitHub
parent 478c732116 dfc2a2d097
commit 864ff7754b
3 changed files with 26 additions and 7 deletions
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5
targets/TARGET_STM/TARGET_STM32F2/TARGET_NUCLEO_F207ZG/PeripheralPins.c
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@ -86,7 +86,10 @@ const PinMap PinMap_ADC[] = {
{PF_7, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC3_IN5
{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_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
{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_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
{NC, NC, 0}
};

13
targets/TARGET_STM/TARGET_STM32F2/TARGET_NUCLEO_F207ZG/PinNames.h
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@ -43,14 +43,14 @@ extern "C" {
#define STM_PIN_DATA_EXT(MODE, PUPD, AFNUM, CHANNEL, INVERTED) ((int)(((MODE & 0x0F) << 0) |\
((PUPD & 0x07) << 4) |\
((AFNUM & 0x0F) << 7) |\
((CHANNEL & 0x0F) << 11) |\
((INVERTED & 0x01) << 15)))
((CHANNEL & 0x1F) << 11) |\
((INVERTED & 0x01) << 16)))
#define STM_PIN_MODE(X) (((X) >> 0) & 0x0F)
#define STM_PIN_PUPD(X) (((X) >> 4) & 0x07)
#define STM_PIN_AFNUM(X) (((X) >> 7) & 0x0F)
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x0F)
#define STM_PIN_INVERTED(X) (((X) >> 15) & 0x01)
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x1F)
#define STM_PIN_INVERTED(X) (((X) >> 16) & 0x01)
#define STM_MODE_INPUT (0)
#define STM_MODE_OUTPUT_PP (1)
@ -199,6 +199,11 @@ typedef enum {
PH_0 = 0x70,
PH_1 = 0x71,
// ADC internal channels
ADC_TEMP = 0xF0,
ADC_VREF = 0xF1,
ADC_VBAT = 0xF2,
// Arduino connector namings
A0 = PA_3,
A1 = PC_0,

15
targets/TARGET_STM/TARGET_STM32F2/analogin_api.c
View File

@ -58,8 +58,10 @@ void analogin_init(analogin_t *obj, PinName pin)
MBED_ASSERT(function != (uint32_t)NC);
obj->channel = STM_PIN_CHANNEL(function);
// Configure GPIO
pinmap_pinout(pin, PinMap_ADC);
// Configure GPIO excepted for internal channels (Temperature, Vref, Vbat)
if ((obj->channel != 16) && (obj->channel != 17) && (obj->channel != 18)) {
pinmap_pinout(pin, PinMap_ADC);
}
// Save pin number for the read function
obj->pin = pin;
@ -166,6 +168,15 @@ static inline uint16_t adc_read(analogin_t *obj)
case 15:
sConfig.Channel = ADC_CHANNEL_15;
break;
case 16:
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
break;
case 17:
sConfig.Channel = ADC_CHANNEL_VREFINT;
break;
case 18:
sConfig.Channel = ADC_CHANNEL_VBAT;
break;
default:
return 0;
}