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refactor(mcpwm): refactor gpio mode config in mcpwm

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Deprecate io_loop_back flag. Use capture timer to test generator and
dead time.
This commit is contained in:
Chen Jichang
2024-10-09 15:37:05 +08:00
parent 6a29351bd0
commit cb097aeb54
14 changed files with 442 additions and 120 deletions
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28
components/esp_driver_mcpwm/src/mcpwm_gen.c
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@@ -21,10 +21,12 @@
#include "soc/soc_caps.h"
#include "soc/mcpwm_periph.h"
#include "hal/mcpwm_ll.h"
#include "hal/gpio_hal.h"
#include "driver/gpio.h"
#include "driver/mcpwm_gen.h"
#include "mcpwm_private.h"
#include "esp_private/esp_gpio_reserve.h"
#include "esp_private/gpio.h"
static const char *TAG = "mcpwm";
@@ -84,27 +86,29 @@ esp_err_t mcpwm_new_generator(mcpwm_oper_handle_t oper, const mcpwm_generator_co
// reset generator
mcpwm_hal_generator_reset(hal, oper_id, gen_id);
// GPIO configuration
gen->gen_gpio_num = -1; // gpio not initialized yet
gpio_config_t gpio_conf = {
.intr_type = GPIO_INTR_DISABLE,
// also enable the input path if `io_loop_back` is enabled
.mode = (config->flags.io_od_mode ? GPIO_MODE_OUTPUT_OD : GPIO_MODE_OUTPUT) | (config->flags.io_loop_back ? GPIO_MODE_INPUT : 0),
.pin_bit_mask = (1ULL << config->gen_gpio_num),
.pull_down_en = config->flags.pull_down,
.pull_up_en = config->flags.pull_up,
};
ESP_GOTO_ON_ERROR(gpio_config(&gpio_conf), err, TAG, "config gen GPIO failed");
// reserve the GPIO output path, because we don't expect another peripheral to signal to the same GPIO
uint64_t old_gpio_rsv_mask = esp_gpio_reserve(BIT64(config->gen_gpio_num));
// check if the GPIO is already used by others
if (old_gpio_rsv_mask & BIT64(config->gen_gpio_num)) {
ESP_LOGW(TAG, "GPIO %d is not usable, maybe conflict with others", config->gen_gpio_num);
}
// GPIO Matrix/MUX configuration
gpio_func_sel(config->gen_gpio_num, PIN_FUNC_GPIO);
// connect the signal to the GPIO by matrix, it will also enable the output path properly
esp_rom_gpio_connect_out_signal(config->gen_gpio_num,
mcpwm_periph_signals.groups[group->group_id].operators[oper_id].generators[gen_id].pwm_sig,
config->flags.invert_pwm, 0);
// deprecated, to be removed in in esp-idf v6.0
if (config->flags.io_loop_back) {
gpio_ll_input_enable(&GPIO, config->gen_gpio_num);
}
if (config->flags.io_od_mode) {
gpio_ll_od_enable(&GPIO, config->gen_gpio_num);
}
// fill in other generator members
gen->gen_gpio_num = config->gen_gpio_num;
gen->spinlock = (portMUX_TYPE)portMUX_INITIALIZER_UNLOCKED;
@@ -126,9 +130,9 @@ esp_err_t mcpwm_del_generator(mcpwm_gen_handle_t gen)
mcpwm_group_t *group = oper->group;
ESP_LOGD(TAG, "del generator (%d,%d,%d)", group->group_id, oper->oper_id, gen->gen_id);
// reset GPIO
// disable GPIO output
if (gen->gen_gpio_num >= 0) {
gpio_reset_pin(gen->gen_gpio_num);
gpio_output_disable(gen->gen_gpio_num);
esp_gpio_revoke(BIT64(gen->gen_gpio_num));
}
// recycle memory resource