This commit is contained in:
Lucian Copeland 2020-06-25 17:27:01 -04:00
parent 87835c77e8
commit 6c91af7d56
3 changed files with 312 additions and 3 deletions

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@ -81,9 +81,6 @@ STATIC void pulseout_event_handler(void) {
return; //invalid interrupt
}
HAL_GPIO_WritePin(pin_port(2),pin_mask(6), 1);
HAL_GPIO_WritePin(pin_port(2),pin_mask(6), 0);
pulse_array_index++;
// No more pulses. Turn off output and don't restart.

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@ -0,0 +1,272 @@
/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Lucian Copeland for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
static bool stm_timer_reserved[MP_ARRAY_SIZE(mcu_tim_banks)];
static bool stm_timer_never_reset[MP_ARRAY_SIZE(mcu_tim_banks)];
static void *stm_timer_callback[MP_ARRAY_SIZE(mcu_tim_banks)](void);
STATIC void tim_clock_enable(uint16_t mask);
STATIC void tim_clock_disable(uint16_t mask);
// Get the frequency (in Hz) of the source clock for the given timer.
// On STM32F405/407/415/417 there are 2 cases for how the clock freq is set.
// If the APB prescaler is 1, then the timer clock is equal to its respective
// APB clock. Otherwise (APB prescaler > 1) the timer clock is twice its
// respective APB clock. See DM00031020 Rev 4, page 115.
STATIC uint32_t timer_get_source_freq(uint32_t tim_id) {
uint32_t source, clk_div;
if (tim_id == 1 || (8 <= tim_id && tim_id <= 11)) {
// TIM{1,8,9,10,11} are on APB2
source = HAL_RCC_GetPCLK2Freq();
clk_div = RCC->CFGR & RCC_CFGR_PPRE2;
} else {
// TIM{2,3,4,5,6,7,12,13,14} are on APB1
source = HAL_RCC_GetPCLK1Freq();
clk_div = RCC->CFGR & RCC_CFGR_PPRE1;
}
if (clk_div != 0) {
// APB prescaler for this timer is > 1
source *= 2;
}
return source;
}
TIM_TypeDef * stm_peripherals_find_timer(void) {
// TODO: check for unreserved timers from already claimed pins
// Work backwards - higher index timers have fewer pin allocations
for (size_t i = MP_ARRAY_SIZE(stm_timer_reserved); i>=0; i--) {
if ((!stm_timer_reserved[i]) && (mcu_tim_banks[i] != NULL)) {
return mcu_tim_banks[i];
}
}
mp_raise_RuntimeError(translate("All timers in use"));
return NULL;
}
void stm_peripherals_timer_set_callback(void(*callback)(void), TIM_TypeDef * timer) {
stm_timer_callback[stm_peripherals_timer_get_index]
}
void stm_peripherals_timer_free(TIM_TypeDef * instance) {
}
void stm_peripherals_timer_never_reset(TIM_TypeDef * instance);
void stm_peripherals_timer_reset_ok(TIM_TypeDef * instance);
void stm_peripherals_timer_is_never_reset(TIM_TypeDef * instance);
void stm_peripherals_timer_is_reserved(TIM_TypeDef * instance);
size_t stm_peripherals_timer_get_index(TIM_TypeDef * instance);
STATIC void tim_clock_enable(uint16_t mask) {
#ifdef TIM1
if (mask & (1 << 0)) {
__HAL_RCC_TIM1_CLK_ENABLE();
}
#endif
#ifdef TIM2
if (mask & (1 << 1)) {
__HAL_RCC_TIM2_CLK_ENABLE();
}
#endif
#ifdef TIM3
if (mask & (1 << 2)) {
__HAL_RCC_TIM3_CLK_ENABLE();
}
#endif
#ifdef TIM4
if (mask & (1 << 3)) {
__HAL_RCC_TIM4_CLK_ENABLE();
}
#endif
#ifdef TIM5
if (mask & (1 << 4)) {
__HAL_RCC_TIM5_CLK_ENABLE();
}
#endif
//6 and 7 are reserved ADC timers
#ifdef TIM8
if (mask & (1 << 7)) {
__HAL_RCC_TIM8_CLK_ENABLE();
}
#endif
#ifdef TIM9
if (mask & (1 << 8)) {
__HAL_RCC_TIM9_CLK_ENABLE();
}
#endif
#ifdef TIM10
if (mask & (1 << 9)) {
__HAL_RCC_TIM10_CLK_ENABLE();
}
#endif
#ifdef TIM11
if (mask & (1 << 10)) {
__HAL_RCC_TIM11_CLK_ENABLE();
}
#endif
#ifdef TIM12
if (mask & (1 << 11)) {
__HAL_RCC_TIM12_CLK_ENABLE();
}
#endif
#ifdef TIM13
if (mask & (1 << 12)) {
__HAL_RCC_TIM13_CLK_ENABLE();
}
#endif
#ifdef TIM14
if (mask & (1 << 13)) {
__HAL_RCC_TIM14_CLK_ENABLE();
}
#endif
}
STATIC void tim_clock_disable(uint16_t mask) {
#ifdef TIM1
if (mask & (1 << 0)) {
__HAL_RCC_TIM1_CLK_DISABLE();
}
#endif
#ifdef TIM2
if (mask & (1 << 1)) {
__HAL_RCC_TIM2_CLK_DISABLE();
}
#endif
#ifdef TIM3
if (mask & (1 << 2)) {
__HAL_RCC_TIM3_CLK_DISABLE();
}
#endif
#ifdef TIM4
if (mask & (1 << 3)) {
__HAL_RCC_TIM4_CLK_DISABLE();
}
#endif
#ifdef TIM5
if (mask & (1 << 4)) {
__HAL_RCC_TIM5_CLK_DISABLE();
}
#endif
//6 and 7 are reserved ADC timers
#ifdef TIM8
if (mask & (1 << 7)) {
__HAL_RCC_TIM8_CLK_DISABLE();
}
#endif
#ifdef TIM9
if (mask & (1 << 8)) {
__HAL_RCC_TIM9_CLK_DISABLE();
}
#endif
#ifdef TIM10
if (mask & (1 << 9)) {
__HAL_RCC_TIM10_CLK_DISABLE();
}
#endif
#ifdef TIM11
if (mask & (1 << 10)) {
__HAL_RCC_TIM11_CLK_DISABLE();
}
#endif
#ifdef TIM12
if (mask & (1 << 11)) {
__HAL_RCC_TIM12_CLK_DISABLE();
}
#endif
#ifdef TIM13
if (mask & (1 << 12)) {
__HAL_RCC_TIM13_CLK_DISABLE();
}
#endif
#ifdef TIM14
if (mask & (1 << 13)) {
__HAL_RCC_TIM14_CLK_DISABLE();
}
#endif
}
STATIC void callback_router(size_t index) {
if (stm_timer_callback[index]) {
(*stm_timer_callback[index])();
}
}
void TIM1_CC_IRQHandler(void) { // Advanced timer
callback_router(1);
}
void TIM2_IRQHandler(void) {
callback_router(2);
}
void TIM3_IRQHandler(void) {
callback_router(3);
}
void TIM4_IRQHandler(void) {
callback_router(4);
}
void TIM5_IRQHandler(void) {
callback_router(5);
}
void TIM6_DAC_IRQHandler(void) { // Basic timer (DAC)
callback_router(6);
}
void TIM7_IRQHandler(void) { // Basic timer
callback_router(7);
}
void TIM8_CC_IRQHandler(void) { // Advanced timer
callback_router(8);
}
// Advanced timer interrupts are currently unused.
void TIM1_BRK_TIM9_IRQHandler(void) {
callback_router(9);
}
void TIM1_UP_TIM10_IRQHandler(void) {
callback_router(10);
}
void TIM1_TRG_COM_TIM11_IRQHandler(void) {
callback_router(11);
}
void TIM8_BRK_TIM12_IRQHandler(void) {
callback_router(12);
}
void TIM8_UP_TIM13_IRQHandler(void) {
callback_router(13);
}
void TIM8_TRG_COM_TIM14_IRQHandler(void) {
callback_router(14);
}
#if (CPY_STM32H7)
void TIM15_IRQHandler(void) {
callback_router(15);
}
void TIM16_IRQHandler(void) {
callback_router(16);
}
void TIM17_IRQHandler(void) {
callback_router(17);
}
#endif

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@ -0,0 +1,40 @@
/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Lucian Copeland for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
typedef struct {
TIM_TypeDef * p_reg;
uint8_t instance_id;
uint8_t cc_channel_count;
} nrfx_timer_t;
void timers_reset(void);
TIM_TypeDef * stm_peripherals_find_timer(void);
void stm_peripherals_timer_free(TIM_TypeDef * instance);
void stm_peripherals_timer_never_reset(TIM_TypeDef * instance);
void stm_peripherals_timer_reset_ok(TIM_TypeDef * instance);
void stm_peripherals_timer_is_never_reset(TIM_TypeDef * instance);
void stm_peripherals_timer_is_reserved(TIM_TypeDef * instance);
size_t stm_peripherals_timer_get_index(TIM_TypeDef * instance);