Peter Drescher / mbed-F401

mbed library with additional peripherals for ST F401 board

Fork of mbed-src by mbed official

This mbed LIB has additional peripherals for ST F401 board

  • UART2 : PA_3 rx, PA_2 tx
  • UART3 : PC_7 rx, PC_6 tx
  • I2C2 : PB_3 SDA, PB_10 SCL
  • I2C3 : PB_4 SDA, PA_8 SCL

Diff: targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/port_api.c

Revision:
76:aeb1df146756
Parent:
70:c1fbde68b492
Child:
84:f54042cbc282
--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/port_api.c	Mon Jan 27 13:30:06 2014 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/port_api.c	Mon Jan 27 14:30:07 2014 +0000
@@ -30,9 +30,12 @@
 #include "port_api.h"
 #include "pinmap.h"
 #include "gpio_api.h"
+#include "error.h"
 
 #if DEVICE_PORTIN || DEVICE_PORTOUT
 
+extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
+
 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
 // low nibble  = pin number
 PinName port_pin(PortName port, int pin_n) {
@@ -40,14 +43,13 @@
 }
 
 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
-
+    GPIO_TypeDef *gpio;
+  
     uint32_t port_index = (uint32_t)port; // (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
 
     // Enable GPIO clock
-    RCC_APB2PeriphClockCmd((RCC_APB2Periph_GPIOA << port_index), ENABLE);
-
-    // Get GPIO structure base address
-    GPIO_TypeDef *gpio = (GPIO_TypeDef *)(GPIOA_BASE + (port_index << 10));
+    uint32_t gpio_add = Set_GPIO_Clock(port_index);
+    gpio = (GPIO_TypeDef *)gpio_add;
 
     // Fill PORT object structure for future use
     obj->port      = port;