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MCPWM: expose API to set timer resolution

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Closes https://github.com/espressif/esp-idf/issues/1101
This commit is contained in:
SalimTerryLi
2021-07-28 17:09:02 +08:00
parent 1063f0c9dd
commit f4314af913
6 changed files with 178 additions and 37 deletions
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20
components/hal/esp32s3/include/hal/mcpwm_ll.h
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@@ -41,15 +41,20 @@ extern "C" {
/********************* Group registers *******************/
// Set/Get group clock: PWM_clk = CLK_160M / (prescale + 1)
// Set/Get group clock: PWM_clk = CLK_160M / (clk_cfg.prescale + 1)
static inline void mcpwm_ll_group_set_clock_prescale(mcpwm_dev_t *mcpwm, int pre_scale)
{
mcpwm->clk_cfg.prescale = pre_scale - 1;
// In case the compiler optimise a 32bit instruction (e.g. s32i) into 8bit instruction (e.g. s8i, which is not allowed to access a register)
// We take care of the "read-modify-write" procedure by ourselves.
typeof(mcpwm->clk_cfg) clkcfg = mcpwm->clk_cfg;
clkcfg.prescale = pre_scale - 1;
mcpwm->clk_cfg = clkcfg;
}
static inline uint32_t mcpwm_ll_group_get_clock_prescale(mcpwm_dev_t *mcpwm)
{
return mcpwm->clk_cfg.prescale + 1;
typeof(mcpwm->clk_cfg) clkcfg = mcpwm->clk_cfg;
return clkcfg.prescale + 1;
}
static inline void mcpwm_ll_group_enable_shadow_mode(mcpwm_dev_t *mcpwm)
@@ -265,12 +270,17 @@ static inline void mcpwm_ll_intr_enable_capture(mcpwm_dev_t *mcpwm, uint32_t cap
static inline void mcpwm_ll_timer_set_clock_prescale(mcpwm_dev_t *mcpwm, int timer_id, uint32_t prescale)
{
mcpwm->timer[timer_id].period.prescale = prescale - 1;
// In case the compiler optimise a 32bit instruction (e.g. s32i) into 8bit instruction (e.g. s8i, which is not allowed to access a register)
// We take care of the "read-modify-write" procedure by ourselves.
typeof(mcpwm->timer[timer_id].period) period = mcpwm->timer[timer_id].period;
period.prescale = prescale - 1;
mcpwm->timer[timer_id].period = period;
}
static inline uint32_t mcpwm_ll_timer_get_clock_prescale(mcpwm_dev_t *mcpwm, int timer_id)
{
return mcpwm->timer[timer_id].period.prescale + 1;
typeof(mcpwm->timer[timer_id].period) period = mcpwm->timer[timer_id].period;
return period.prescale + 1;
}
static inline void mcpwm_ll_timer_set_peak(mcpwm_dev_t *mcpwm, int timer_id, uint32_t peak, bool symmetric)