Add back PB_6/PB_7 pins definition used by STDIO_UART_TX/RX

Author: bcostm

targets/TARGET_STM/TARGET_STM32L4/TARGET_DISCO_L475VG_IOT01A/PeripheralPins.c

@@ -198,7 +198,7 @@ const PinMap PinMap_UART_TX[] = {
     {PA_0,       UART_4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // ARDUINO D1
     {PA_2,       UART_2,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // ARDUINO D10
 //  {PA_9,       UART_1,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // Not available on any connector
-//  {PB_6,       UART_1,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // Not available on any connector
+    {PB_6,       UART_1,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // STDIO_UART_TX Not available on any connector
 //  {PB_10,      UART_3,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // Not available on any connector
 //  {PB_11,      LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)}, // Not available on any connector
     {PC_1,       LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)}, // ARDUINO A4
@@ -215,7 +215,7 @@ const PinMap PinMap_UART_RX[] = {
     {PA_1,       UART_4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // ARDUINO D0
     {PA_3,       UART_2,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // ARDUINO D4
 //  {PA_10,      UART_1,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // Not available on any connector
-//  {PB_7,       UART_1,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // Not available on any connector
+    {PB_7,       UART_1,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // STDIO_UART_RX Not available on any connector
 //  {PB_10,      LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)}, // Not available on any connector
 //  {PB_11,      UART_3,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // Not available on any connector
     {PC_0,       LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)}, // ARDUINO A5