Peter Drescher
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/cmsis/TARGET_Freescale/TARGET_K20D5M/cmsis_nvic.c
- Revision:
- 68:41613245dfd7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_Freescale/TARGET_K20D5M/cmsis_nvic.c Thu Dec 26 13:00:06 2013 +0000
@@ -0,0 +1,30 @@
+/* mbed Microcontroller Library - cmsis_nvic for LPC11U24
+ * Copyright (c) 2011 ARM Limited. All rights reserved.
+ *
+ * CMSIS-style functionality to support dynamic vectors
+ */
+#include "cmsis_nvic.h"
+
+#define NVIC_RAM_VECTOR_ADDRESS (0x1FFFE000) // Vectors positioned at start of RAM
+#define NVIC_FLASH_VECTOR_ADDRESS (0x0) // Initial vector position in flash
+
+void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
+ uint32_t *vectors = (uint32_t*)SCB->VTOR;
+ uint32_t i;
+
+ // Copy and switch to dynamic vectors if the first time called
+ if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
+ uint32_t *old_vectors = vectors;
+ vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
+ for (i=0; i<NVIC_NUM_VECTORS; i++) {
+ vectors[i] = old_vectors[i];
+ }
+ SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
+ }
+ vectors[IRQn + 16] = vector;
+}
+
+uint32_t NVIC_GetVector(IRQn_Type IRQn) {
+ uint32_t *vectors = (uint32_t*)SCB->VTOR;
+ return vectors[IRQn + 16];
+}