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stm32/extint: Simplify bitband support config for different MCUs.

This commit is contained in:
Damien George 2019-07-03 12:02:58 +10:00
parent 14bec7964f
commit 79b6688558
1 changed files with 10 additions and 11 deletions
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21
ports/stm32/extint.c
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@ -84,11 +84,12 @@
// TODO Add python method to change callback object.
#if defined(STM32F4) || defined(STM32L4)
// These MCUs have bitband support so define macros to atomically set/clear bits in IMR/EMR and SWIER
#define EXTI_OFFSET (EXTI_BASE - PERIPH_BASE)
// Macro used to set/clear the bit corresponding to the line in the IMR/EMR
// register in an atomic fashion by using bitband addressing.
#define EXTI_MODE_BB(mode, line) (*(__IO uint32_t *)(PERIPH_BB_BASE + ((EXTI_OFFSET + (mode)) * 32) + ((line) * 4)))
#define EXTI_SWIER_BB(line) (*(__IO uint32_t *)(PERIPH_BB_BASE + ((EXTI_OFFSET + offsetof(EXTI_TypeDef, SWIER)) * 32) + ((line) * 4)))
#endif
#if defined(STM32L4)
// The L4 MCU supports 40 Events/IRQs lines of the type configurable and direct.
@ -116,8 +117,6 @@
#define EXTI_FTSR EXTI->FTSR
#endif
#define EXTI_SWIER_BB(line) (*(__IO uint32_t *)(PERIPH_BB_BASE + ((EXTI_OFFSET + offsetof(EXTI_TypeDef, SWIER)) * 32) + ((line) * 4)))
typedef struct {
mp_obj_base_t base;
mp_int_t line;
@ -349,8 +348,8 @@ void extint_enable(uint line) {
if (line >= EXTI_NUM_VECTORS) {
return;
}
#if defined(STM32F0) || defined(STM32F7) || defined(STM32H7)
// The Cortex-M7 doesn't have bitband support.
#if !defined(EXTI_MODE_BB)
// This MCU doesn't have bitband support.
mp_uint_t irq_state = disable_irq();
if (pyb_extint_mode[line] == EXTI_Mode_Interrupt) {
#if defined(STM32H7)
@ -379,8 +378,8 @@ void extint_disable(uint line) {
return;
}
#if defined(STM32F0) || defined(STM32F7) || defined(STM32H7)
// The Cortex-M7 doesn't have bitband support.
#if !defined(EXTI_MODE_BB)
// This MCU doesn't have bitband support.
mp_uint_t irq_state = disable_irq();
#if defined(STM32H7)
EXTI_D1->IMR1 &= ~(1 << line);
@ -417,8 +416,8 @@ void extint_trigger_mode(uint line, uint32_t mode) {
if (line >= EXTI_NUM_VECTORS) {
return;
}
#if defined(STM32F0) || defined(STM32F7) || defined(STM32H7)
// The Cortex-M7 doesn't have bitband support.
#if !defined(EXTI_MODE_BB)
// This MCU doesn't have bitband support.
mp_uint_t irq_state = disable_irq();
// Enable or disable the rising detector
if ((mode & GPIO_MODE_IT_RISING) == GPIO_MODE_IT_RISING) {