kopia lustrzana https://github.com/espressif/esp-idf
75 wiersze
2.4 KiB
C
75 wiersze
2.4 KiB
C
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/*
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* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include "sdkconfig.h"
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#if CONFIG_GDMA_ENABLE_DEBUG_LOG
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// The local log level must be defined before including esp_log.h
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// Set the maximum log level for this source file
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#define LOG_LOCAL_LEVEL ESP_LOG_DEBUG
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#endif
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "soc/soc_caps.h"
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#include "soc/periph_defs.h"
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#include "esp_log.h"
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#include "esp_check.h"
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#include "gdma_priv.h"
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static const char *TAG = "gdma";
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esp_err_t gdma_config_crc_calculator(gdma_channel_handle_t dma_chan, const gdma_crc_calculator_config_t *config)
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{
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ESP_RETURN_ON_FALSE(dma_chan && config, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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gdma_pair_t *pair = dma_chan->pair;
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gdma_group_t *group = pair->group;
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gdma_hal_context_t *hal = &group->hal;
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switch (group->bus_id) {
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#if SOC_AHB_GDMA_SUPPORTED
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case SOC_GDMA_BUS_AHB:
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ESP_RETURN_ON_FALSE(config->crc_bit_width <= GDMA_LL_AHB_MAX_CRC_BIT_WIDTH, ESP_ERR_INVALID_ARG, TAG, "invalid crc bit width");
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break;
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#endif // SOC_AHB_GDMA_SUPPORTED
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#if SOC_AXI_GDMA_SUPPORTED
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case SOC_GDMA_BUS_AXI:
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ESP_RETURN_ON_FALSE(config->crc_bit_width <= GDMA_LL_AXI_MAX_CRC_BIT_WIDTH, ESP_ERR_INVALID_ARG, TAG, "invalid crc bit width");
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break;
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#endif // SOC_AXI_GDMA_SUPPORTED
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default:
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ESP_LOGE(TAG, "invalid bus id: %d", group->bus_id);
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return ESP_ERR_INVALID_ARG;
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}
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// clear the previous CRC result
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gdma_hal_clear_crc(hal, pair->pair_id, dma_chan->direction);
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// set polynomial and initial value
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gdma_hal_crc_config_t hal_config = {
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.crc_bit_width = config->crc_bit_width,
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.poly_hex = config->poly_hex,
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.init_value = config->init_value,
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.reverse_data_mask = config->reverse_data_mask,
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};
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gdma_hal_set_crc_poly(hal, pair->pair_id, dma_chan->direction, &hal_config);
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return ESP_OK;
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}
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esp_err_t gdma_crc_get_result(gdma_channel_handle_t dma_chan, uint32_t *result)
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{
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ESP_RETURN_ON_FALSE(dma_chan && result, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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gdma_pair_t *pair = dma_chan->pair;
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gdma_group_t *group = pair->group;
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gdma_hal_context_t *hal = &group->hal;
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*result = gdma_hal_get_crc_result(hal, pair->pair_id, dma_chan->direction);
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return ESP_OK;
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}
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