Merging spi and ble_app_att_mtu_throughput

[Ste_]

Hi, 

I'm struggling to use ble_app_att_mtu_throughput and spi. Some help? 

When I merge the two codes the main code (ble_app_att_mtu_throughput) doesn't work.

Thanks for your help

[Jared]

Hi,

Does the merged code build without any errors?

regards

Jared

[Ste_]

yes

[Jared]

Hi,

Do you get any error during runtime? Please specify what you mean by doesn't work?

regards

Jared 

[Ste_]

When I run just ble_app_att_mtu_throughput and I open the PuTTY terminals, I see "this board act as responder" and "this board act as tester.

This doesn't happen when I add spi code. I open the two terminals and nothing happen, neither if I push the reset button on the nRF52832 boards

It's clear I wrong something in the code. Do you have some Q&A related about?

Thanks

[Ste_]

This is the part of the spi code I added

//-------- Configuration SPI----------------
#define SPIS_INSTANCE 1 /**< SPIS instance index. */
static const nrf_drv_spis_t spis = NRF_DRV_SPIS_INSTANCE(SPIS_INSTANCE); /**< SPIS instance. */

#define PACKET_SIZE 244
#define NUM_PACKETS 10

static uint8_t m_tx_buf[PACKET_SIZE]; /**< TX buffer. */
static uint8_t m_rx_buf[PACKET_SIZE]; /**< RX buffer. */
static const uint8_t m_length = PACKET_SIZE; /**< Transfer length. */

static volatile bool spis_xfer_done; /**< Flag used to indicate that SPIS instance completed the transfer. */

/**
 * @brief SPIS user event handler.
 *
 * @param event
 */
void spis_event_handler(nrf_drv_spis_event_t event) {
    if (event.evt_type == NRF_DRV_SPIS_XFER_DONE) {
        spis_xfer_done = true;
        NRF_LOG_INFO("Transfer completed. Received: %s", (uint32_t)m_rx_buf);
    }
}

static void spis_init(void) {
    nrf_drv_spis_config_t spis_config = NRF_DRV_SPIS_DEFAULT_CONFIG;
    spis_config.csn_pin               = APP_SPIS_CS_PIN;
    spis_config.miso_pin              = APP_SPIS_MISO_PIN;
    spis_config.mosi_pin              = APP_SPIS_MOSI_PIN;
    spis_config.sck_pin               = APP_SPIS_SCK_PIN;
    
    APP_ERROR_CHECK(nrf_drv_spis_init(&spis, &spis_config, spis_event_handler));
}

At the end I added spi_init() in the main()

[Ste_]

Sorry if I wasn't so clear. I'll try to clarify now.

My purpose is to assest a system with a communication by BLE with two nRF52832. I modified the example code ble_app_att_mtu_throughput to send 244 bytes packets. Now my object is to maintain the BLE communication but the data, instead to be create by a function in main (which create numbers from 0 to 243), are created and sent via SPI. This is the code I created with Python for my SPI Driver:

from spidriver import SPIDriver

def main():
    # Initialize the SPI Driver on the right COM
    try:
        sd = SPIDriver('COM5')
        print("SPI Driver correctly initialized")
    except Exception as e:
        print(f"ERROR")
        return

    # Creating data packet
    data_packet = bytearray(range(244))  # Creating a packet from 0 to 243
    print("Packet created:", data_packet)

    # Sending the packet via SPI
    try:
        sd.sel()  # Select your SPI device (CS down)
        sd.write(data_packet)  # Sending data packet
        sd.unsel()  # Deselect SPI device (CS up)
        print("Data packet sent correctly")
    except Exception as e:
        print(f"ERROR")

if __name__ == "__main__":
    main()

Now the point is: modify amts.c, amt.h and main.c to accept the data via SPIS

Do you have some Q&A on this to advise?

Thanks

[Jared]

Hi there,

Ste_ said:

My purpose is to assest a system with a communication by BLE with two nRF52832. I modified the example code ble_app_att_mtu_throughput to send 244 bytes packets. Now my object is to maintain the BLE communication but the data, instead to be create by a function in main (which create numbers from 0 to 243), are created and sent via SPI. This is the code I created with Python for my SPI Driver:

Where are you running this python code? On what device?

regards

Jared

[Ste_]

On my SPI Driver

[Jared]

Yes, but on what device are you trying to run this code on?

regards

Jared