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kaidegitkaidegit
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add firmware
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‎README.md

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Original file line numberDiff line numberDiff line change
@@ -198,6 +198,194 @@ void Audio_SelectStation(uint16_t new_stationID) {
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}
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```
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### OLED底层驱动
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OLED底层驱动还是使用了我的[祖传代码](https://github.com/kaidegit/HWDrivers4MCU/tree/main/OLED_SSD1306_i2c)，虽然是i2c的，但是稍微改改发送接口，从spi发送就可以正常使用了。
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```c++
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void MY_SPI_Init() {
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spi_bus_config_t buscfg = {
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.miso_io_num=-1,
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.mosi_io_num=OLED_MOSI_Pin,
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.sclk_io_num=OLED_CLK_Pin,
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.quadwp_io_num=-1,
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.quadhd_io_num=-1,
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.max_transfer_sz=0
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};
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spi_device_interface_config_t devcfg = {
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.clock_speed_hz=1 * 1000 * 1000, //Clock out at 1 MHz
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.mode=0, //SPI mode 0
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.spics_io_num=-1, //CS pin
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.queue_size=7, //We want to be able to queue 7 transactions at a time
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};
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ESP_ERROR_CHECK(spi_bus_initialize(OLED_SPI_HOST, &buscfg, SPI_DMA_DISABLED));
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ESP_ERROR_CHECK(spi_bus_add_device(OLED_SPI_HOST, &devcfg, &oled_spi_handle));
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}
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spi_device_handle_t oled_spi_handle;
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void oled_send(uint8_t dc, uint8_t data) {
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spi_transaction_t t = {0};
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t.length = 8;
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t.tx_buffer = &data;
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gpio_set_level(OLED_DC_Pin, dc == 0x40);
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spi_device_polling_transmit(oled_spi_handle, &t);
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}
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```
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### FM底层驱动
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这款FM芯片有个坑，它并非像传统的i2c设备一样，可以通过发送设备地址-发送寄存器地址-读或者写值这种操作方法来操作，而是只能顺序读取或者写入所有寄存器数据，具体可以参考数据手册。
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由于没能找到比较好的驱动，我这里参考github上一个适配于arduino的程序自己写了一个较为简陋的驱动
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```c++
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struct RDA_Handler RDA5807;
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RADIO_FREQ FMStationList[50] = {0};
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uint16_t FMStationNum = 0;
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void RDA_ReadAllInfo() {
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, 0x21, 1);
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// from 0x0A high to 0x0C low
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uint8_t i2c_data_array[6];
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// read 0x0A
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i2c_master_read_byte(cmd, i2c_data_array + 0, 0);
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i2c_master_read_byte(cmd, i2c_data_array + 1, 0);
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// read 0x0B
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i2c_master_read_byte(cmd, i2c_data_array + 2, 0);
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i2c_master_read_byte(cmd, i2c_data_array + 3, 0);
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// read 0x0C
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i2c_master_read_byte(cmd, i2c_data_array + 4, 0);
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i2c_master_read_byte(cmd, i2c_data_array + 5, 1);
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i2c_master_stop(cmd);
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i2c_master_cmd_begin(FM_I2C_HOST, cmd, 1000 / portTICK_RATE_MS);
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i2c_cmd_link_delete(cmd);
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RDA5807.radioInfo.rds = i2c_data_array[0] & 0x80;
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uint16_t readChan = ((i2c_data_array[0] & 0x03) << 8) + i2c_data_array[1];
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switch (RDA5807.band) {
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case RADIO_BAND_US:
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RDA5807.freq = RDA5807.channelSpacing * readChan + 87 * 1000;
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break;
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case RADIO_BAND_JP:
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case RADIO_BAND_WW:
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RDA5807.freq = RDA5807.channelSpacing * readChan + 76 * 1000;
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break;
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case RADIO_BAND_EE:
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RDA5807.freq = RDA5807.channelSpacing * readChan + 65 * 1000;
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}
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RDA5807.radioInfo.rssi = i2c_data_array[2] >> 2;
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}
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void RDA_WriteAllInfo() {
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, 0x20, 1);
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for (uint8_t i = 2; i < 8; i++) {
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i2c_master_write_byte(cmd, RDA5807.regList[i] >> 8, 1);
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i2c_master_write_byte(cmd, RDA5807.regList[i] & 0xff, 1);
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}
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i2c_master_stop(cmd);
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i2c_master_cmd_begin(FM_I2C_HOST, cmd, 1000 / portTICK_RATE_MS);
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i2c_cmd_link_delete(cmd);
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}
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void RDA_Init() {
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RDA5807.channelSpacing = 100;
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// Reg 0x00 and 0x01 are not used
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RDA5807.regList[0] = 0;
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RDA5807.regList[1] = 0;
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RDA5807.regList[2] = 0b11000000 << 8 | 0b00000011;
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RDA5807.regList[3] = 0b00000000 << 8 | 0b00000000;
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RDA5807.regList[4] = 0b00001000 << 8 | 0b00000000;
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RDA5807.regList[5] = 0b10000100 << 8 | 0b11010100;
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RDA5807.regList[6] = 0b00000000 << 8 | 0b00000000;
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RDA5807.regList[7] = 0b00000000 << 8 | 0b00000000;
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RDA_WriteAllInfo();
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RDA_Reset();
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}
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void RDA_Reset() {
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RDA5807.regList[RADIO_REG_CTRL] |= RADIO_REG_CTRL_RESET;
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RDA_WriteAllInfo();
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vTaskDelay(100 / portTICK_RATE_MS);
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RDA5807.regList[RADIO_REG_CTRL] &= !RADIO_REG_CTRL_RESET;
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RDA_WriteAllInfo();
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}
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void RDA_SetBandFrequency(enum RADIO_BAND newBand, RADIO_FREQ newFreq) {
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RDA_SetBand(newBand);
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RDA_SetFrequency(newFreq);
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}
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void RDA_SetFrequency(RADIO_FREQ newFreq) {
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RADIO_FREQ freqHigh, freqLow;
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switch (RDA5807.band) {
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case RADIO_BAND_US:
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freqLow = 87000;
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freqHigh = 108000;
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break;
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case RADIO_BAND_JP:
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freqLow = 76000;
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freqHigh = 91000;
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break;
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case RADIO_BAND_WW:
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freqLow = 76000;
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freqHigh = 108000;
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break;
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case RADIO_BAND_EE:
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freqLow = 65000;
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freqHigh = 76000;
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break;
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default:
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freqLow = 65000;
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freqHigh = 108000;
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break;
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}
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if (newFreq < freqLow) newFreq = freqLow;
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if (newFreq > freqHigh) newFreq = freqHigh;
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uint16_t regChannel = RDA5807.regList[RADIO_REG_CHAN] &
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(RADIO_REG_CHAN_SPACE | RADIO_REG_CHAN_BAND);
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uint16_t newChannel = (newFreq - freqLow) / RDA5807.channelSpacing;
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regChannel += RADIO_REG_CHAN_TUNE; // enable tuning
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regChannel |= newChannel << 6;
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RDA5807.regList[RADIO_REG_CTRL] |=
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RADIO_REG_CTRL_OUTPUT | RADIO_REG_CTRL_UNMUTE |
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RADIO_REG_CTRL_RDS | RADIO_REG_CTRL_ENABLE; // | RADIO_REG_CTRL_NEW
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RDA5807.regList[RADIO_REG_CHAN] = regChannel;
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RDA_WriteAllInfo();
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}
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void RDA_SetBand(enum RADIO_BAND newBand) {
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RDA5807.band = newBand;
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switch (newBand) {
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case RADIO_BAND_US:
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RDA5807.regList[RADIO_REG_CHAN] &= !RADIO_REG_CHAN_BAND;
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RDA5807.regList[RADIO_REG_CHAN] |= RADIO_REG_CHAN_BAND_US;
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break;
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case RADIO_BAND_JP:
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RDA5807.regList[RADIO_REG_CHAN] &= !RADIO_REG_CHAN_BAND;
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RDA5807.regList[RADIO_REG_CHAN] |= RADIO_REG_CHAN_BAND_JP;
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break;
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case RADIO_BAND_WW:
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RDA5807.regList[RADIO_REG_CHAN] &= !RADIO_REG_CHAN_BAND;
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RDA5807.regList[RADIO_REG_CHAN] |= RADIO_REG_CHAN_BAND_WW;
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break;
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case RADIO_BAND_EE:
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RDA5807.regList[RADIO_REG_CHAN] &= !RADIO_REG_CHAN_BAND;
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RDA5807.regList[RADIO_REG_CHAN] |= RADIO_REG_CHAN_BAND_EE;
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break;
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default:
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break;
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}
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RDA5807.regList[RADIO_REG_CHAN] |= RADIO_REG_CHAN_SPACE_100;
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RDA_WriteAllInfo();
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}
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```
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### GUI部分
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GUI部分我新建了一个线程，根据各个标志位来判断模式，显示各类信息
@@ -447,5 +635,9 @@ static void gpio_isr_handler(void *arg) {
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}
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```
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## 感悟与心得
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初次上手乐鑫，我感觉乐鑫的例程还是十分丰富的。由于在使用STM32时，我已经对cmake有一个初步的掌握了，转到乐鑫的esp-idf时就显得不那么费力了，也能继续用我熟悉的CLion了。但是似乎对于那些只熟悉MDK-ARM或者IAR的嵌入式开发者，转而使用乐鑫idf就似乎显得要学的东西有点多了。
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再对比下当下STM32和ESP32的价格和性能，ESP32还真是便宜大碗啊，还有着WiFi功能。尽管ESP的库比ST的Hal库庞大亿点，深入调试略微麻烦，有些库甚至封装成了lib，但还是在群友的帮助下解决了问题。
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‎firmware/firmware.bin

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‎firmware/firmware.elf

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‎img/流程图.png

28.8 KB
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