Fix EnvieM7 analog functionality

Author: facchinm

cores/arduino/mbed/targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H747xI/TARGET_ENVIE/PinNames.h

@@ -42,19 +42,21 @@ typedef enum {
     ALT1  = 0x200,
     ALT2  = 0x300,
     ALT3  = 0x400,
-    ALT4  = 0x500
+    ALT4  = 0x500,
+    ALT6  = 0x700,
+    ALTC  = 0x1000
 } ALTx;
 
 typedef enum {
     PA_0  = 0x00,
-    PA_0_ALT0 = PA_0 | ALT0,
-    PA_0_ALT1 = PA_0 | ALT1,
-    PA_0_ALT2 = PA_0 | ALT2,
-    PA_0_ALT3 = PA_0 | ALT3,
+    PA_0_C = PA_0 | ALTC,
+    PA_0_C_ALT0 = PA_0 | ALT0 | ALTC,
+    PA_0_C_ALT1 = PA_0 | ALT1 | ALTC,
+    PA_0_C_ALT2 = PA_0 | ALT2 | ALTC,
     PA_1  = 0x01,
     PA_1_ALT0 = PA_1 | ALT0,
-    PA_1_ALT1 = PA_1 | ALT1,
-    PA_1_ALT2 = PA_1 | ALT2,
+    PA_1_C = PA_1 | ALTC,
+    PA_1_C_ALT0 = PA_1 | ALT0 | ALTC,
     PA_2  = 0x02,
     PA_2_ALT0 = PA_2 | ALT0,
     PA_2_ALT1 = PA_2 | ALT1,
@@ -137,7 +139,17 @@ typedef enum {
     PC_1_ALT4 = PC_1 | ALT4,
     PC_2  = 0x22,
     PC_2_ALT0 = PC_2 | ALT0,
+    PC_2_ALT1 = PC_2 | ALT1,
+    PC_2_ALT2 = PC_2 | ALT2,
+    PC_2_ALT3 = PC_2 | ALT3,
+    PC_2_ALT4 = PC_2 | ALT4,
+    PC_2_C  = PC_2 | ALTC,
+    PC_2_C_ALT0 = PC_2 | ALT0 | ALTC,
     PC_3  = 0x23,
+    PC_3_ALT0 = PC_3 | ALT0,
+    PC_3_ALT1 = PC_3 | ALT1,
+    PC_3_ALT2 = PC_3 | ALT2,
+    PC_3_C  = PC_3 | ALTC,
     PC_4  = 0x24,
     PC_4_ALT0 = PC_4 | ALT0,
     PC_5  = 0x25,

variants/ENVIE_M7/defines.txt

@@ -44,7 +44,7 @@
 -DFEATURE_LWIP=1
 -D__FPU_PRESENT=1
 -D__MBED__=1
--DMBED_BUILD_TIMESTAMP=1578934770.558274
+-DMBED_BUILD_TIMESTAMP=1578997943.2767987
 -D__MBED_CMSIS_RTOS_CM
 -DMBED_TICKLESS
 -DSTM32H747xx

variants/ENVIE_M7/libs/libmbed.a

@@ -23,14 +23,13 @@ PinDescription g_APinDescription[] = {
   PA_9, NULL, NULL,     // D14
 
   // A0 - A7
-  PA_0_ALT0,  NULL, NULL,     // A0
-  PA_1_ALT0,  NULL, NULL,     // A1
-  PC_2_ALT0, NULL, NULL,     // A2
-  //PC_3_ALT0, NULL, NULL,     // A3
-  PC_3, NULL, NULL,     // A3       // FIXME: this is wrong
-  PC_2, NULL, NULL,     // A4
-  PC_3,  NULL, NULL,     // A5
-  PA_4, NULL, NULL,     // A6
+  PA_0_C_ALT2,  NULL, NULL,    // A0       ADC2_INP0
+  PA_1_C_ALT0,  NULL, NULL,    // A1       ADC2_INP1
+  PC_2_C_ALT0, NULL, NULL,     // A2       ADC3_INP0
+  PC_3_C, NULL, NULL,       // A3            ADC3_INP1        
+  PC_2_ALT0, NULL, NULL,          // A4    ADC1_INP12
+  PC_3_ALT2,  NULL, NULL,         // A5         ADC2_INP13
+  PA_4, NULL, NULL,          // A6         ADC1_INP18
 };
 
 extern "C" {
@@ -41,8 +40,14 @@ extern "C" {
 
 void initVariant() {
 	RTCHandle.Instance = RTC;
-	// Turn off LED red from bootloader
+	// Turn off LED from bootloader
 	digitalWrite(PK_6, HIGH);
+
+  // configure analog mux to split Pxy and Pxy_C
+  HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PA0, SYSCFG_SWITCH_PA0_OPEN);
+  HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PA1, SYSCFG_SWITCH_PA1_OPEN);
+  HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PC2, SYSCFG_SWITCH_PC2_OPEN);
+  HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PC3, SYSCFG_SWITCH_PC3_OPEN);
 }
 
 #ifdef SERIAL_CDC