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-rw-r--r--libmaple/nvic.c18
1 files changed, 4 insertions, 14 deletions
diff --git a/libmaple/nvic.c b/libmaple/nvic.c
index 60e7eac..b911e35 100644
--- a/libmaple/nvic.c
+++ b/libmaple/nvic.c
@@ -42,13 +42,8 @@ void nvic_set_vector_table(uint32 addr, uint32 offset) {
* @param n interrupt number
*/
void nvic_irq_enable(uint32 n) {
- if (n < 32) {
- REG_SET_BIT(NVIC_ISER0, n);
- } else if(n < 64) {
- REG_SET_BIT(NVIC_ISER1, n - 32);
- } else {
- REG_SET_BIT(NVIC_ISER2, n - 64);
- }
+ uint32 *iser = &((uint32*)NVIC_ISER0)[(n/32)];
+ __write(iser, BIT(n % 32));
}
/**
@@ -56,13 +51,8 @@ void nvic_irq_enable(uint32 n) {
* @param n interrupt number
*/
void nvic_irq_disable(uint32 n) {
- if (n < 32) {
- REG_SET_BIT(NVIC_ICER0, n);
- } else if(n < 64) {
- REG_SET_BIT(NVIC_ICER1, n - 32);
- } else {
- REG_SET_BIT(NVIC_ICER2, n - 64);
- }
+ uint32 *icer = &((uint32*)NVIC_ICER0)[(n/32)];
+ __write(icer, BIT(n % 32));
}
void nvic_irq_disable_all(void) {