RS485 is half-duplex communication, the data sent is also received, so when you finish sending data, you need to call `uart_flush_input`.
Not sure if it solves your issue
thanks !!
Search found 118 matches
- Mon Mar 16, 2020 10:14 am
- Forum: ESP-IDF
- Topic: RS485 UART returns incorrect messages
- Replies: 2
- Views: 4154
- Mon Mar 16, 2020 3:36 am
- Forum: Hardware
- Topic: Esp32 i2s parallel driver with FreeRtos
- Replies: 5
- Views: 9654
Re: Esp32 i2s parallel driver with FreeRtos
Hi, Baldhead ESP_Angus provided some good suggestions for you, also you can use queue to make two buffers work synchronously. The code can be like this: //DMA idle flag int dma_idle_flag = 0; //We used the out_eof interrupt, but the eof interrupt was not generated before the transfer started, // so ...
- Wed Mar 11, 2020 2:51 am
- Forum: ESP-IDF
- Topic: ESP-IDF on ESP32-D0WDQ6 or ESP32-WROOM with 3 UART and 1 I2C
- Replies: 4
- Views: 4727
Re: ESP-IDF on ESP32-D0WDQ6 or ESP32-WROOM with 3 UART and 1 I2C
Hi, mmartinez
The UART pin can remap to any input-able and output-able GPIO
The UART pin can remap to any input-able and output-able GPIO
- Tue Mar 03, 2020 2:40 am
- Forum: Report Bugs
- Topic: examples/peripherals/pcnt/main/pcnt_example_main.c Bug
- Replies: 3
- Views: 12245
- Sun Feb 23, 2020 12:06 pm
- Forum: ESP-IDF
- Topic: I2S to Internal DAC is Broken
- Replies: 11
- Views: 13447
Re: I2S to Internal DAC is Broken
Hi,
The I2S DAC in the master branch is currently not working. We have refactored the driver and have not merged into the master branch (will be OK soon). It can work on release 3.3.
thanks !!
The I2S DAC in the master branch is currently not working. We have refactored the driver and have not merged into the master branch (will be OK soon). It can work on release 3.3.
thanks !!
- Sun Feb 23, 2020 12:05 pm
- Forum: ESP-IDF
- Topic: Internal DAC audio output - Please Help - no luck with idf examples or guide
- Replies: 8
- Views: 11038
Re: Internal DAC audio output - Please Help - no luck with idf examples or guide
Hi,
The I2S DAC in the master branch is currently not working. We have refactored the driver and have not merged into the master branch. It can work on release 3.3.
The I2S DAC in the master branch is currently not working. We have refactored the driver and have not merged into the master branch. It can work on release 3.3.
- Thu Feb 20, 2020 5:17 pm
- Forum: Hardware
- Topic: UDMA Decoder and linked-list
- Replies: 1
- Views: 3643
Re: UDMA Decoder and linked-list
Hi, Binogof, The encode and the decode is optional. If you don't want to use encoding and decoding, you should clear the following register: [ conf0: seper_en, head_en, crc_rec_en, encode_crc_en ] and [ escape_conf: tx_c0_esc_en, tx_db_esc_en, tx_11_esc_en, tx_13_esc_en, rx_c0_esc_en, rx_db_esc_en, ...
- Wed Feb 19, 2020 8:44 am
- Forum: ESP-IDF
- Topic: ESP32 i2C support
- Replies: 7
- Views: 6880
Re: ESP32 i2C support
Hi, yashdave88
Can you provide more information about the I2C problem you are experiencing? Such as providing waveforms during communication.
thanks !!
Can you provide more information about the I2C problem you are experiencing? Such as providing waveforms during communication.
thanks !!
- Sun Jan 05, 2020 5:05 am
- Forum: ESP-IDF 中文讨论版
- Topic: ESP32如何将双核利用起来?
- Replies: 1
- Views: 4677
Re: ESP32如何将双核利用起来?
Hi,
请问指的"没用" 是什么样的现象?你所创建的任务是不是串行的? menuconfig 中是否使能了双核?
请问指的"没用" 是什么样的现象?你所创建的任务是不是串行的? menuconfig 中是否使能了双核?
- Sun Jan 05, 2020 5:00 am
- Forum: ESP-IDF 中文讨论版
- Topic: 关于RMT的问题
- Replies: 1
- Views: 4008
Re: 关于RMT的问题
Hi, 由于 ESP32 RMT 每个接收和发送模块默认的 memory 是一个 block 大小, 最多只能接收 63 个序列. 所以 64bit 是无法被接收的. 但是通道的大小是可以拓展的, 比如通道 0 可以占用 通道 1 的 memory, 这样可以接收超过 63 个序列. typedef struct { rmt_mode_t rmt_mode; /*!< RMT mode: transmitter or receiver */ rmt_channel_t channel; /*!< RMT channel */ uint8_t clk_div; /*!< RMT channel ...