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Enable ADC scaling and enable internal channels 

Increases input range by 2x(now, 0-2.4v)
pull/6202/head
Keyur Hariya 2018-02-02 10:58:50 -06:00
parent 992c889b33
commit dcf3b904d1
4 changed files with 8 additions and 4 deletions
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4
targets/TARGET_Maxim/TARGET_MAX32625/PeripheralPins.c
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@ -163,6 +163,10 @@ const PinMap PinMap_ADC[] = {
{ AIN_3, ADC, ADC_CH_3 },
{ AIN_4, ADC, ADC_CH_0_DIV_5 },
{ AIN_5, ADC, ADC_CH_1_DIV_5 },
{ AIN_6, ADC, ADC_CH_VDDB_DIV_4 },
{ AIN_7, ADC, ADC_CH_VDD18 },
{ AIN_8, ADC, ADC_CH_VDD12 },
{ AIN_9, ADC, ADC_CH_VRTC_DIV_2 },
{ NC, NC, 0 }
};

2
targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625MBED/PinNames.h
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@ -60,7 +60,7 @@ typedef enum {
P4_0 = (4 << PORT_SHIFT), P4_1, P4_2, P4_3, P4_4, P4_5, P4_6, P4_7,
// Analog input pins
AIN_0 = (0xA << PORT_SHIFT), AIN_1, AIN_2, AIN_3, AIN_4, AIN_5,
AIN_0 = (0xA << PORT_SHIFT), AIN_1, AIN_2, AIN_3, AIN_4, AIN_5, AIN_6, AIN_7, AIN_8, AIN_9,
LED_GREEN = P3_1,
LED_RED = P3_0,

2
targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625NEXPAQ/PinNames.h
View File

@ -60,7 +60,7 @@ typedef enum {
P4_0 = (4 << PORT_SHIFT), P4_1, P4_2, P4_3, P4_4, P4_5, P4_6, P4_7,
// Analog input pins
AIN_0 = (0xA << PORT_SHIFT), AIN_1, AIN_2, AIN_3, AIN_4, AIN_5,
AIN_0 = (0xA << PORT_SHIFT), AIN_1, AIN_2, AIN_3, AIN_4, AIN_5, AIN_6, AIN_7, AIN_8, AIN_9,
// LEDs
LED1 = P2_4,

4
targets/TARGET_Maxim/TARGET_MAX32625/analogin_api.c
View File

@ -65,7 +65,7 @@ float analogin_read(analogin_t *obj)
float result;
// Start conversion with no input scaling and no input buffer bypass
ADC_StartConvert(obj->channel, 0, 0);
ADC_StartConvert(obj->channel, 1, 0);
if (ADC_GetData(&tmp) == E_OVERFLOW) {
result = FLOAT_FULL_SCALE;
@ -83,7 +83,7 @@ uint16_t analogin_read_u16(analogin_t *obj)
uint16_t result;
// Start conversion with no input scaling and no input buffer bypass
ADC_StartConvert(obj->channel, 0, 0);
ADC_StartConvert(obj->channel, 1, 0);
if (ADC_GetData(&tmp) == E_OVERFLOW) {
result = INT_FULL_SCALE;