controller_hci_uart_esp32 sample
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Outline
#include <stdio.h>
#include <string.h>
#include "nvs_flash.h"
#include "esp_bt.h"
#include "soc/uhci_periph.h"
#include "driver/uart.h"
#include "esp_private/periph_ctrl.h"
#include "esp_log.h"
tag
uart_gpio_reset()
app_main()
Files
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SourceVuESP-IDF Framework and Examplescontroller_hci_uart_esp32 samplemain/controller_hci_uart_demo.c
 
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/* * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 *//* ... */ #include <stdio.h> #include <string.h> #include "nvs_flash.h" #include "esp_bt.h" #include "soc/uhci_periph.h" #include "driver/uart.h" #include "esp_private/periph_ctrl.h" // for enabling UHCI module, remove it after UHCI driver is released #include "esp_log.h"8 includes static const char *tag = "CONTROLLER_UART_HCI"; static void uart_gpio_reset(void) { #if CONFIG_BTDM_CTRL_HCI_UART_NO == 1 periph_module_enable(PERIPH_UART1_MODULE); #elif CONFIG_BTDM_CTRL_HCI_UART_NO == 2 periph_module_enable(PERIPH_UART2_MODULE); #endif periph_module_enable(PERIPH_UHCI0_MODULE); #ifdef CONFIG_BTDM_CTRL_HCI_UART_NO ESP_LOGI(tag, "HCI UART%d Pin select: TX 5, RX 18, CTS 23, RTS 19 Baudrate:%d", CONFIG_BTDM_CTRL_HCI_UART_NO, CONFIG_BTDM_CTRL_HCI_UART_BAUDRATE); uart_set_pin(CONFIG_BTDM_CTRL_HCI_UART_NO, 5, 18, 19, 23);/* ... */ #endif }{ ... } void app_main(void) { esp_err_t ret; /* Initialize NVS — it is used to store PHY calibration data */ ret = nvs_flash_init(); if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) { ESP_ERROR_CHECK(nvs_flash_erase()); ret = nvs_flash_init(); }{...} ESP_ERROR_CHECK( ret ); /* As the UART1/2 pin conflict with flash pin, so do matrix of the signal and pin */ uart_gpio_reset(); esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT(); ret = esp_bt_controller_init(&bt_cfg); if (ret != ESP_OK) { ESP_LOGE(tag, "Bluetooth Controller initialize failed: %s", esp_err_to_name(ret)); return; }{...} ret = esp_bt_controller_enable(ESP_BT_MODE_BTDM); if (ret != ESP_OK) { ESP_LOGE(tag, "Bluetooth Controller initialize failed: %s", esp_err_to_name(ret)); return; }{...} }{ ... }
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