134 lines
5.1 KiB
C
134 lines
5.1 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "esp_log.h"
|
|
#include "esp_err.h"
|
|
#include "driver/sigmadelta.h"
|
|
#include "esp_heap_caps.h"
|
|
#include "hal/sigmadelta_hal.h"
|
|
|
|
static const char *TAG = "SIGMADELTA";
|
|
|
|
#define SIGMADELTA_CHECK(a,str,ret_val) if(!(a)) { \
|
|
ESP_LOGE(TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
|
|
return (ret_val); \
|
|
}
|
|
|
|
typedef struct {
|
|
sigmadelta_hal_context_t hal; /*!< SIGMADELTA hal context*/
|
|
} sigmadelta_obj_t;
|
|
|
|
static sigmadelta_obj_t *p_sigmadelta_obj[SIGMADELTA_PORT_MAX] = {0};
|
|
|
|
#define SIGMADELTA_OBJ_CHECK(sigmadelta_port) { \
|
|
SIGMADELTA_CHECK((sigmadelta_port < SIGMADELTA_PORT_MAX), "sigmadelta port error", ESP_ERR_INVALID_ARG); \
|
|
SIGMADELTA_CHECK((p_sigmadelta_obj[sigmadelta_port]), "sigmadelta driver has not been initialized", ESP_ERR_INVALID_STATE); \
|
|
}
|
|
|
|
static inline esp_err_t _sigmadelta_set_duty(sigmadelta_port_t sigmadelta_port, sigmadelta_channel_t channel, int8_t duty)
|
|
{
|
|
SIGMADELTA_OBJ_CHECK(sigmadelta_port);
|
|
|
|
sigmadelta_hal_set_duty(&(p_sigmadelta_obj[sigmadelta_port]->hal), channel, duty);
|
|
return ESP_OK;
|
|
}
|
|
|
|
static inline esp_err_t _sigmadelta_set_prescale(sigmadelta_port_t sigmadelta_port, sigmadelta_channel_t channel, uint8_t prescale)
|
|
{
|
|
SIGMADELTA_OBJ_CHECK(sigmadelta_port);
|
|
|
|
sigmadelta_hal_set_prescale(&(p_sigmadelta_obj[sigmadelta_port]->hal), channel, prescale);
|
|
return ESP_OK;
|
|
}
|
|
|
|
static inline esp_err_t _sigmadelta_set_pin(sigmadelta_port_t sigmadelta_port, sigmadelta_channel_t channel, gpio_num_t gpio_num)
|
|
{
|
|
SIGMADELTA_OBJ_CHECK(sigmadelta_port);
|
|
|
|
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], PIN_FUNC_GPIO);
|
|
gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT);
|
|
gpio_matrix_out(gpio_num, GPIO_SD0_OUT_IDX + channel, 0, 0);
|
|
return ESP_OK;
|
|
}
|
|
|
|
static inline esp_err_t _sigmadelta_config(sigmadelta_port_t sigmadelta_port, const sigmadelta_config_t *config)
|
|
{
|
|
SIGMADELTA_OBJ_CHECK(sigmadelta_port);
|
|
|
|
_sigmadelta_set_duty(sigmadelta_port, config->channel, config->sigmadelta_duty);
|
|
_sigmadelta_set_prescale(sigmadelta_port, config->channel, config->sigmadelta_prescale);
|
|
_sigmadelta_set_pin(sigmadelta_port, config->channel, config->sigmadelta_gpio);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t sigmadelta_deinit(sigmadelta_port_t sigmadelta_port)
|
|
{
|
|
SIGMADELTA_OBJ_CHECK(sigmadelta_port);
|
|
|
|
heap_caps_free(p_sigmadelta_obj[sigmadelta_port]);
|
|
p_sigmadelta_obj[sigmadelta_port] = NULL;
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t sigmadelta_init(sigmadelta_port_t sigmadelta_port)
|
|
{
|
|
SIGMADELTA_CHECK((sigmadelta_port < SIGMADELTA_PORT_MAX), "sigmadelta_port error", ESP_ERR_INVALID_ARG);
|
|
SIGMADELTA_CHECK((p_sigmadelta_obj[sigmadelta_port]) == NULL, "sigmadelta driver already initialized", ESP_ERR_INVALID_STATE);
|
|
|
|
p_sigmadelta_obj[sigmadelta_port] = (sigmadelta_obj_t *) heap_caps_calloc(1, sizeof(sigmadelta_obj_t), MALLOC_CAP_DEFAULT);
|
|
|
|
if (p_sigmadelta_obj[sigmadelta_port] == NULL) {
|
|
ESP_LOGE(TAG, "TAG driver malloc error");
|
|
return ESP_FAIL;
|
|
}
|
|
|
|
sigmadelta_hal_init(&(p_sigmadelta_obj[sigmadelta_port]->hal), sigmadelta_port);
|
|
return ESP_OK;
|
|
}
|
|
|
|
// TODO: The following functions are wrappers, for compatibility with current API.
|
|
|
|
esp_err_t sigmadelta_set_duty(sigmadelta_channel_t channel, int8_t duty)
|
|
{
|
|
SIGMADELTA_CHECK(channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
|
|
return _sigmadelta_set_duty(SIGMADELTA_PORT_0, channel, duty);
|
|
}
|
|
|
|
esp_err_t sigmadelta_set_prescale(sigmadelta_channel_t channel, uint8_t prescale)
|
|
{
|
|
SIGMADELTA_CHECK(channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
|
|
return _sigmadelta_set_prescale(SIGMADELTA_PORT_0, channel, prescale);
|
|
}
|
|
|
|
esp_err_t sigmadelta_set_pin(sigmadelta_channel_t channel, gpio_num_t gpio_num)
|
|
{
|
|
SIGMADELTA_CHECK(channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
|
|
SIGMADELTA_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "sigmadelta gpio num error", ESP_ERR_INVALID_ARG);
|
|
return _sigmadelta_set_pin(SIGMADELTA_PORT_0, channel, gpio_num);
|
|
}
|
|
|
|
esp_err_t sigmadelta_config(const sigmadelta_config_t *config)
|
|
{
|
|
SIGMADELTA_CHECK(config->channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
|
|
SIGMADELTA_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(config->sigmadelta_gpio), "sigmadelta gpio num error", ESP_ERR_INVALID_ARG);
|
|
esp_err_t ret;
|
|
|
|
if ((p_sigmadelta_obj[SIGMADELTA_PORT_0]) == NULL) {
|
|
ret = sigmadelta_init(SIGMADELTA_PORT_0);
|
|
if (ret != ESP_OK) {
|
|
return ret;
|
|
}
|
|
}
|
|
return _sigmadelta_config(SIGMADELTA_PORT_0, config);
|
|
}
|