Search found 24 matches

by trustmiao
Thu Mar 21, 2019 9:07 am
Forum: General Discussion
Topic: idf i2c scanner could not find device(while arduino ide can)
Replies: 1
Views: 663

Re: idf i2c scanner could not find device(while arduino ide can)

as a record, I solve the problem by adjusting
I2C[i2c_num]->timeout.tout = 200000;
in driver/i2c.c - i2c_param_config:

I got answer from
by trustmiao
Thu Mar 21, 2019 9:05 am
Forum: General Discussion
Topic: IDF i2c issues, unable to find device on bus
Replies: 8
Views: 1644

Re: IDF i2c issues, unable to find device on bus

Though this is an old post, I wish very much to know whether/what solution did you find. I've experienced exactly the same trouble while I am trying connecting to BNO 080. I also found i2c in arduino ide, but not idf. here is the post I described my scenario, but no lock no answer. https://www.esp3...
by trustmiao
Thu Mar 21, 2019 7:50 am
Forum: General Discussion
Topic: IDF i2c issues, unable to find device on bus
Replies: 8
Views: 1644

Re: IDF i2c issues, unable to find device on bus

Though this is an old post, I wish very much to know whether/what solution did you find. I've experienced exactly the same trouble while I am trying connecting to BNO 080. I also found i2c in arduino ide, but not idf. here is the post I described my scenario, but no lock no answer. https://www.esp32...
by trustmiao
Sat Mar 16, 2019 9:44 am
Forum: General Discussion
Topic: idf i2c scanner could not find device(while arduino ide can)
Replies: 1
Views: 663

idf i2c scanner could not find device(while arduino ide can)

I used to program in arduino ide, and i2c works fluently. Wire.begin(22,21,400000); Wire.setClock(400000); Scanning I2C Addresses .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .....
by trustmiao
Fri Jan 11, 2019 6:56 pm
Forum: Hardware
Topic: When using Uart to pc,stopping ESP32 dev kit entering flash mode / how to get out of flash mode on pc side
Replies: 5
Views: 673

Re: When using Uart to pc,stopping ESP32 dev kit entering flash mode / how to get out of flash mode on pc side

the temporary working solution is after flash the board, connect gpio0 to vcc, incase some other may find helpful
by trustmiao
Tue Jan 08, 2019 8:27 am
Forum: Hardware
Topic: Highest frequency of ESPNOW data transfer
Replies: 1
Views: 400

Highest frequency of ESPNOW data transfer

while we are testing the highest fps of sending one byte through ESPNOW. We could n't even stably sending at 30fps. Worst will be around 7-9 fps, happen once couple second. The master will show this message once in couple second: Send Status: Success Sending: 124 E (16662) wifi: esf_buf: t=3 l=40 ma...
by trustmiao
Tue Jan 08, 2019 8:02 am
Forum: Hardware
Topic: When using Uart to pc,stopping ESP32 dev kit entering flash mode / how to get out of flash mode on pc side
Replies: 5
Views: 673

Re: When using Uart to pc,stopping ESP32 dev kit entering flash mode / how to get out of flash mode on pc side

I wish this is the option, we tried different terminal, and only arduino work fine with a reset. Our own terminal is writen in c++ same, didn't work. Out of cards
by trustmiao
Wed Jan 02, 2019 5:37 pm
Forum: Hardware
Topic: When using Uart to pc,stopping ESP32 dev kit entering flash mode / how to get out of flash mode on pc side
Replies: 5
Views: 673

When using Uart to pc,stopping ESP32 dev kit entering flash mode / how to get out of flash mode on pc side

When using esp32 dev kit(we tried different brand/ model ,and the same happens). While uart connection is open, we click the "en" button at the same time without pressing "boot", the esp32 will enter flash mode, displaying, rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2)...
by trustmiao
Thu Nov 29, 2018 6:58 am
Forum: ESP32 Arduino
Topic: UART/Serial.write with communication status return
Replies: 1
Views: 321

UART/Serial.write with communication status return

while using ESP-NOW esp_err_tesp_now_send(const uint8_t *peer_addr, const uint8_t *data, size_t len) it will return ESP_OK while the message is successfully delivered. However, while using UART, int uart_write_bytes(uart_port_tuart_num, const char *src, size_t size) Return (-1) Parameter error OTHER...

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