Merge pull request #465 from bcostm/master

[NUCLEOs] Fix bug (normalization to 16bit) in adc read_u16()

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/analogin_api.c

@@ -169,7 +169,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/analogin_api.c

@@ -176,7 +176,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/analogin_api.c

@@ -171,7 +171,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/analogin_api.c

@@ -180,7 +180,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F334R8/analogin_api.c

@@ -198,7 +198,10 @@ static inline uint16_t adc_read(analogin_t *obj)
 
 uint16_t analogin_read_u16(analogin_t *obj)
 {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj)

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F401RE/analogin_api.c

@@ -170,7 +170,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F411RE/analogin_api.c

@@ -173,7 +173,10 @@ static inline uint16_t adc_read(analogin_t *obj)
 
 uint16_t analogin_read_u16(analogin_t *obj)
 {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj)

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/analogin_api.c

@@ -177,7 +177,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {

libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/analogin_api.c

@@ -180,7 +180,10 @@ static inline uint16_t adc_read(analogin_t *obj) {
 }
 
 uint16_t analogin_read_u16(analogin_t *obj) {
-    return (adc_read(obj));
+    uint16_t value = adc_read(obj);
+    // 12-bit to 16-bit conversion
+    value = ((value << 4) & (uint16_t)0xFFF0) | ((value >> 8) & (uint16_t)0x000F);
+    return value;
 }
 
 float analogin_read(analogin_t *obj) {