Hello Eren.
Table 7-2 from
https://www.espressif.com/sites/default/files/documentation/esp32-c6_technical_reference_manual_en.pdf
show relation between IDX and peripherals, but there are only 2 UARTs
available, it doesn't talk about 3rd uart. I will check more about this.
Will be good to add more than one uart in esp32c6.
Em qua., 15 de jan. de 2025 às 08:51, Felipe Moura Oliveira <
moura....@gmail.com> escreveu:
> Hello Eren.
>
> Thanks for your support.
> I cannot find a relation with values of IDX in the technical reference.
> Also, looking at the use of the function esp_gpio_matrix_out in the idf,
> the approach there is different.
> Do you know how I can find the right IDX for LP_UART?
>
> LP_UART is available in idf by config below:
>
> { // LP UART0
> .pins = {
> [SOC_UART_TX_PIN_IDX] = {
> .default_gpio = LP_U0TXD_GPIO_NUM,
> .iomux_func = LP_U0TXD_MUX_FUNC,
> .input = 0,
> .signal = UINT8_MAX, // Signal not available in signal map
> },
>
> [SOC_UART_RX_PIN_IDX] = {
> .default_gpio = LP_U0RXD_GPIO_NUM,
> .iomux_func = LP_U0RXD_MUX_FUNC,
> .input = 1,
> .signal = UINT8_MAX, // Signal not available in signal map
> },
>
> [SOC_UART_RTS_PIN_IDX] = {
> .default_gpio = LP_U0RTS_GPIO_NUM,
> .iomux_func = LP_U0RTS_MUX_FUNC,
> .input = 0,
> .signal = UINT8_MAX, // Signal not available in signal map
> },
>
> [SOC_UART_CTS_PIN_IDX] = {
> .default_gpio = LP_U0CTS_GPIO_NUM,
> .iomux_func = LP_U0CTS_MUX_FUNC,
> .input = 1,
> .signal = UINT8_MAX, // Signal not available in signal map
> },
> },
> .irq = ETS_LP_UART_INTR_SOURCE,
> },
> };
>
>
>
> Em qua., 15 de jan. de 2025 às 06:20, Eren Terzioğlu
> <eren.terzio...@espressif.com.invalid> escreveu:
>
>> Hi,
>>
>> U1TXD_OUT_IDX and similar idx variables represent signal indexes which
>> are used to route related peripheral output to the gpio. After routing the
>> correct signal to gpio pin, you can access the related peripheral from gpio
>> pin.
>>
>> Best Regards
>> ________________________________
>> From: Felipe Moura Oliveira <moura....@gmail.com>
>> Sent: Wednesday, January 15, 2025 3:55 AM
>> To: dev@nuttx.apache.org <dev@nuttx.apache.org>
>> Subject: Assistance Needed with Adding a Low Power UART on ESP32C6 Project
>>
>> [External: This email originated outside Espressif]
>>
>> *Dear All,*
>>
>> I hope this message finds you well.
>>
>> I am currently working on a project using the ESP32C6 and find myself in
>> need of an additional UART, bringing the total to three UARTs. Initially,
>> I
>> considered implementing a UART using bit-banging; however, after reviewing
>> the documentation, I discovered that a low power UART option is available,
>> which seems to suit my requirements.
>>
>> At first glance, adding this UART does not appear to be overly complex.
>> However, I am encountering an issue related to a missing configuration:
>>
>> The UART configurations on the ESP require two parameters that I am having
>> difficulty understanding:
>>
>> .txsig = U1TXD_OUT_IDX,
>> .rxsig = U1RXD_IN_IDX,
>>
>> Could someone please explain what these parameters represent?
>>
>> Upon examining the gpio_sigmap.h file that references the ESP32C6, I
>> noticed that there isn't a similar parameter available for use with
>> the low power UART. How should I proceed in this case?
>>
>> Any guidance or assistance you can provide would be greatly appreciated.
>>
>> Thank you in advance for your support.
>>
>> *Best regards,*
>>
>>
>> --
>> *Felipe Moura de Oliveira*
>> *Universidade Federal de Minas Gerais*
>> Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
>> <https://twitter.com/FelipeMOliveir?lang=pt-br>
>>
>
>
> --
> *Felipe Moura de Oliveira*
> *Universidade Federal de Minas Gerais*
> Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
> <https://twitter.com/FelipeMOliveir?lang=pt-br>
>
--
*Felipe Moura de Oliveira*
*Universidade Federal de Minas Gerais*
Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
<https://twitter.com/FelipeMOliveir?lang=pt-br>
