Merge pull request #12778 from GaborAbonyi/add_i2c_to_musca_b1

Add I2C api to Musca-B1 target

Author: 0xc0170

targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/PeripheralNames.h

@@ -30,6 +30,11 @@ typedef enum {
     UART_1
 } UARTName;
 
+typedef enum {
+    I2C_0 = 0,
+    I2C_1
+} I2CName;
+
 #define STDIO_UART_TX  UART1_TX
 #define STDIO_UART_RX  UART1_RX
 #define STDIO_UART     UART_1

targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/PinNames.h

@@ -86,6 +86,12 @@ typedef enum {
     LED2 = PA3,
     LED3 = PA4,
 
+    /* I2C pins */
+    I2C0_SDA = PA14,    /* Alternate Function - 1 */
+    I2C0_SCL = PA15,    /* Alternate Function - 1 */
+    I2C1_SDA = PA18,
+    I2C1_SCL = PA19,
+
     /* Not connected */
     NC = (int)0xFFFFFFFF
 } PinName;