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STM32L4xx - Add support of ADC internal channels
1 parent 670b098 commit 569f64a

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7 files changed

+50
-24
lines changed

7 files changed

+50
-24
lines changed

‎targets/TARGET_STM/TARGET_STM32L4/TARGET_DISCO_L476VG/PeripheralPins.c‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
/* mbed Microcontroller Library
22
*******************************************************************************
3-
* Copyright (c) 2015, STMicroelectronics
3+
* Copyright (c) 2016, STMicroelectronics
44
* All rights reserved.
55
*
66
* Redistribution and use in source and binary forms, with or without
@@ -55,6 +55,9 @@ const PinMap PinMap_ADC[] = {
5555
{PC_3, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 4, 0)}, // IN4
5656
{PC_4, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 13, 0)}, // IN13
5757
{PC_5, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 14, 0)}, // IN14
58+
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)},
59+
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)},
60+
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)},
5861
{NC, NC, 0}
5962
};
6063

‎targets/TARGET_STM/TARGET_STM32L4/TARGET_DISCO_L476VG/PinNames.h‎

Lines changed: 10 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
/* mbed Microcontroller Library
22
*******************************************************************************
3-
* Copyright (c) 2015, STMicroelectronics
3+
* Copyright (c) 2016, STMicroelectronics
44
* All rights reserved.
55
*
66
* Redistribution and use in source and binary forms, with or without
@@ -43,14 +43,14 @@ extern "C" {
4343
#define STM_PIN_DATA_EXT(MODE, PUPD, AFNUM, CHANNEL, INVERTED) ((int)(((MODE & 0x0F) << 0) |\
4444
((PUPD & 0x07) << 4) |\
4545
((AFNUM & 0x0F) << 7) |\
46-
((CHANNEL & 0x0F) << 11) |\
47-
((INVERTED & 0x01) << 15)))
46+
((CHANNEL & 0x1F) << 11) |\
47+
((INVERTED & 0x01) << 16)))
4848

4949
#define STM_PIN_MODE(X) (((X) >> 0) & 0x0F)
5050
#define STM_PIN_PUPD(X) (((X) >> 4) & 0x07)
5151
#define STM_PIN_AFNUM(X) (((X) >> 7) & 0x0F)
52-
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x0F)
53-
#define STM_PIN_INVERTED(X) (((X) >> 15) & 0x01)
52+
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x1F)
53+
#define STM_PIN_INVERTED(X) (((X) >> 16) & 0x01)
5454

5555
#define STM_MODE_INPUT (0)
5656
#define STM_MODE_OUTPUT_PP (1)
@@ -166,6 +166,11 @@ typedef enum {
166166
PH_0 = 0x70, // On P1/P2 connectors
167167
PH_1 = 0x71, // On P1/P2 connectors
168168

169+
// ADC internal channels
170+
ADC_TEMP = 0xF0,
171+
ADC_VREF = 0xF1,
172+
ADC_VBAT = 0xF2,
173+
169174
// Generic signals namings
170175
LED1 = PE_8, // LD5 Green
171176
LED2 = PB_2, // LD4 Red

‎targets/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L432KC/PeripheralPins.c‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
/* mbed Microcontroller Library
2-
'*******************************************************************************
2+
*******************************************************************************
33
* Copyright (c) 2016, STMicroelectronics
44
* All rights reserved.
55
*
@@ -49,6 +49,9 @@ const PinMap PinMap_ADC[] = {
4949
{PA_7, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 12, 0)}, // ADC1_IN12
5050
{PB_0, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 15, 0)}, // ADC1_IN15
5151
// {PB_1, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // ADC1_IN16 - does not support channel >= 16
52+
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)},
53+
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)},
54+
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)},
5255
{NC, NC, 0}
5356
};
5457

‎targets/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L432KC/PinNames.h‎

Lines changed: 10 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
/* mbed Microcontroller Library
22
*******************************************************************************
3-
* Copyright (c) 2015, STMicroelectronics
3+
* Copyright (c) 2016, STMicroelectronics
44
* All rights reserved.
55
*
66
* Redistribution and use in source and binary forms, with or without
@@ -43,14 +43,14 @@ extern "C" {
4343
#define STM_PIN_DATA_EXT(MODE, PUPD, AFNUM, CHANNEL, INVERTED) ((int)(((MODE & 0x0F) << 0) |\
4444
((PUPD & 0x07) << 4) |\
4545
((AFNUM & 0x0F) << 7) |\
46-
((CHANNEL & 0x0F) << 11) |\
47-
((INVERTED & 0x01) << 15)))
46+
((CHANNEL & 0x1F) << 11) |\
47+
((INVERTED & 0x01) << 16)))
4848

4949
#define STM_PIN_MODE(X) (((X) >> 0) & 0x0F)
5050
#define STM_PIN_PUPD(X) (((X) >> 4) & 0x07)
5151
#define STM_PIN_AFNUM(X) (((X) >> 7) & 0x0F)
52-
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x0F)
53-
#define STM_PIN_INVERTED(X) (((X) >> 15) & 0x01)
52+
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x1F)
53+
#define STM_PIN_INVERTED(X) (((X) >> 16) & 0x01)
5454

5555
#define STM_MODE_INPUT (0)
5656
#define STM_MODE_OUTPUT_PP (1)
@@ -107,6 +107,11 @@ typedef enum {
107107
PC_14 = 0x2E,
108108
PC_15 = 0x2F,
109109

110+
// ADC internal channels
111+
ADC_TEMP = 0xF0,
112+
ADC_VREF = 0xF1,
113+
ADC_VBAT = 0xF2,
114+
110115
// Arduino connector namings
111116
A0 = PA_0,
112117
A1 = PA_1,

‎targets/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/PeripheralPins.c‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
/* mbed Microcontroller Library
22
*******************************************************************************
3-
* Copyright (c) 2015, STMicroelectronics
3+
* Copyright (c) 2016, STMicroelectronics
44
* All rights reserved.
55
*
66
* Redistribution and use in source and binary forms, with or without
@@ -55,6 +55,9 @@ const PinMap PinMap_ADC[] = {
5555
{PC_3, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 4, 0)}, // IN4
5656
{PC_4, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 13, 0)}, // IN13
5757
{PC_5, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 14, 0)}, // IN14
58+
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)},
59+
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)},
60+
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)},
5861
{NC, NC, 0}
5962
};
6063

‎targets/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/PinNames.h‎

Lines changed: 10 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
/* mbed Microcontroller Library
22
*******************************************************************************
3-
* Copyright (c) 2015, STMicroelectronics
3+
* Copyright (c) 2016, STMicroelectronics
44
* All rights reserved.
55
*
66
* Redistribution and use in source and binary forms, with or without
@@ -43,14 +43,14 @@ extern "C" {
4343
#define STM_PIN_DATA_EXT(MODE, PUPD, AFNUM, CHANNEL, INVERTED) ((int)(((MODE & 0x0F) << 0) |\
4444
((PUPD & 0x07) << 4) |\
4545
((AFNUM & 0x0F) << 7) |\
46-
((CHANNEL & 0x0F) << 11) |\
47-
((INVERTED & 0x01) << 15)))
46+
((CHANNEL & 0x1F) << 11) |\
47+
((INVERTED & 0x01) << 16)))
4848

4949
#define STM_PIN_MODE(X) (((X) >> 0) & 0x0F)
5050
#define STM_PIN_PUPD(X) (((X) >> 4) & 0x07)
5151
#define STM_PIN_AFNUM(X) (((X) >> 7) & 0x0F)
52-
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x0F)
53-
#define STM_PIN_INVERTED(X) (((X) >> 15) & 0x01)
52+
#define STM_PIN_CHANNEL(X) (((X) >> 11) & 0x1F)
53+
#define STM_PIN_INVERTED(X) (((X) >> 16) & 0x01)
5454

5555
#define STM_MODE_INPUT (0)
5656
#define STM_MODE_OUTPUT_PP (1)
@@ -134,6 +134,11 @@ typedef enum {
134134
PH_0 = 0x70,
135135
PH_1 = 0x71,
136136

137+
// ADC internal channels
138+
ADC_TEMP = 0xF0,
139+
ADC_VREF = 0xF1,
140+
ADC_VBAT = 0xF2,
141+
137142
// Arduino connector namings
138143
A0 = PA_0,
139144
A1 = PA_1,

‎targets/TARGET_STM/TARGET_STM32L4/analogin_api.c‎

Lines changed: 8 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
/* mbed Microcontroller Library
2-
* Copyright (c) 2015, STMicroelectronics
2+
* Copyright (c) 2016, STMicroelectronics
33
* All rights reserved.
44
*
55
* Redistribution and use in source and binary forms, with or without
@@ -51,8 +51,10 @@ void analogin_init(analogin_t *obj, PinName pin)
5151
MBED_ASSERT(function != (uint32_t)NC);
5252
obj->channel = STM_PIN_CHANNEL(function);
5353

54-
// Configure GPIO
55-
pinmap_pinout(pin, PinMap_ADC);
54+
// Configure GPIO excepted for internal channels (Temperature, Vref, Vbat)
55+
if ((obj->channel != 0) && (obj->channel != 17) && (obj->channel != 18)) {
56+
pinmap_pinout(pin, PinMap_ADC);
57+
}
5658

5759
// Save pin number for the read function
5860
obj->pin = pin;
@@ -99,7 +101,7 @@ static inline uint16_t adc_read(analogin_t *obj)
99101
// Configure ADC channel
100102
switch (obj->channel) {
101103
case 0:
102-
sConfig.Channel = ADC_CHANNEL_0;
104+
sConfig.Channel = ADC_CHANNEL_VREFINT;
103105
break;
104106
case 1:
105107
sConfig.Channel = ADC_CHANNEL_1;
@@ -150,10 +152,10 @@ static inline uint16_t adc_read(analogin_t *obj)
150152
sConfig.Channel = ADC_CHANNEL_16;
151153
break;
152154
case 17:
153-
sConfig.Channel = ADC_CHANNEL_17;
155+
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
154156
break;
155157
case 18:
156-
sConfig.Channel = ADC_CHANNEL_18;
158+
sConfig.Channel = ADC_CHANNEL_VBAT;
157159
break;
158160
default:
159161
return 0;

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