LoRa Transmit Error: "Send Timeout"

[ecvalenz]

Version

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Describe the bug

Hi @libdriver
I am reaching out because I have been encountering an issue when testing the transmission of a packet with your LoRa driver. The debug print message I keep getting is "sx1262: send timeout" which means that sx1262_lora_transmit() is returning a 5 when I call it. Just to note, I have initialized the DIO1 pin for the IRQ and when I run the IRQ_handler before calling the sx1262_lora_send() function, it was able to print "sx1262: irq tx_done." My code is attached below and the driver, interface, and example main driver have already been completed. For the driver and main driver, I used the files you have provided from this repo. Lastly, in case that this is of any use, I am interfacing the LoRa module with the ESP32S3 via the LilyGo T3-S3-V1.2 development board.

Reproduce

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Expected behavior

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Additional context

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[libdriver]

 Thank you very much for using LibDriver. 
 Your ESP32 should use an interrupt pin to connect to DIO1, and call IRQ_handler in the interrupt program. When you finish receiving or sending, SX1262 will trigger an interrupt, and IRQ_handler will handle the interrupt. If you call IRQ_handler before calling the sending function, the driver will only process the last send or receive. When you call send or receive, the chip will trigger an interrupt through DIO1. At this time, handing it over to IRQ_handler is the current sending or receiving processing.

[ecvalenz]

Thank you for the response. Okay so the DIO1 pin is connected to GPIO33 on the dev. board I am using. Does that mean I have to register the IRQ_handler on that pin then? If so, do I need to do anything else once it is registered? Also if I called sx1262_lora_transmit() in a different file, do i have to take care of anything in regards to the IRQ_handler?

[libdriver]

1.Firstly, you need to configure the pin to interrupt mode, the rising edge triggering(
https://github.com/espressif/esp-idf/blob/master/examples/peripherals/gpio/generic_gpio/main/gpio_example_main.c(line112+))
2.add the IRQ_handler to the GPIO interrupt handler, like this.

static void IRAM_ATTR gpio_isr_handler(void* arg)
{
    IRQ_handler();
}

3.Once you have successfully configured the interrupt, you can use the send or receive function anywhere in the program.
4.You can refer to (https://github.com/libdriver/sx1262/tree/main/project/stm32f407), and this is an example of MCU

[ecvalenz]

I implemented the sx1262_irq_handler accordingly and I am still having the same issue when I run sx1262_lora_send() which is from the LoRa_main.c that you created for this repo. Specifically, I am getting the "send timeout" error. Please let me know if I am doing anything wrong.

[libdriver]

1. Make sure your busy gpio interface working well.
2. There is no gpio config in your first image,may it shoud be like this(rising edge triggering)

    gpio_config_t io_conf = {};

    /* disable pull-down mode */
    io_conf.pull_down_en = 0;

    /* interrupt of rising edge */
    io_conf.intr_type = GPIO_INTR_POSEDGE;

    /* your gpio */
    io_conf.pin_bit_mask = GPIO_INPUT_PIN_SEL;

    /* set as input mode */
    io_conf.mode = GPIO_MODE_INPUT;

    /* enable pull-up mode */
    io_conf.pull_up_en = 1;

    /* gpio config */
    gpio_config(&io_conf);

[ecvalenz]

Yea the busy gpio interface is working well and I do have a gpio_config_t struct declared in the file. Therefore, I do not think the issue is for that reason. Another issue I am having is that when I call sx1262_set_tx_continuous_wave(sx1262_handle_t *handle), nothing is being outputted. I checked the power draw and the output of the sma connector on my development board but the device appears to not be outputting a signal nor drawing more current. I attached the schematic of the development board below for clarification.

T3_S3_V1.2-1.pdf

[libdriver]

I am looking for an ESP32S3 development board here and will write a set of sending and receiving programs for your reference. I will follow the GPIO configuration you provided to ensure that it is close to your development environment. I will test and ensure this program is ok, and that will take a few days, you can refer to this program to help you to locate your software or hardware issue.

[ecvalenz]

Okay that sounds good. Thank you so much for your help.

[sammirata]

Did you write the programs? can you add them to the projects folder please? I want to use this on a PI4 for receive and on an ESP32 for transmit.

[ianchen1016]

Hi, I also have this issue on my board when I call the sx1262_lora_send, I using the I use another manufacturer's ARM A7 with linux(not Rpi4) with with sx1262 EVB board.
The board is send the time out, I try to catch the irq on the sx1262 board with oscilloscope, there's no rising signal output.
I also check the irq on my board, it can detect the rising irq, and also I run the register test, all register is OK.