I setup NRF SDK using nrfconnectsetup341ia32 executable.
I2S example file should be located at <InstallFolder>\examples\peripheral\i2s according to https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Fi2s_example_loopback.html.
But no such folder is available.
Can you please help?
nRF Connect SDK does not have an I2S loopback example. To use the I2S with NCS and the nRF5340 you will have to use the nRFX drivers in "ncs root"\modules\hal\nordic\nrfx\drivers\src\nrfx_i2s.c
Thank you for your reply.
I found I2S loopback example in <InstallFolder>\tests\drivers\i2s.
However this example does not use nrfx_i2s_init or any related functions.
On compiling and running this "Assertion failed at ../src/test_i2s_loopback.c:42: test_i2s_tx_transfer_configure_0: (dev_i2s is NULL) device I2S_0 not found" error occurred.
Can you please let me know if what should be I2S device name to be used?
Can you please let me know where can I find I2S receive/transmit example which uses "nrfx_i2s_init" and related functions?
Add CONFIG_NRFX_I2S=y to prj.conf file in order to include the driver's source file in the build system.
Add #include <nrfx_i2s.h> to your main.c file.
Thank you for this information. I am able to build and run the application.
When I ran the application i got "E: >>> ZEPHYR FATAL ERROR 1: Unhandled interrupt on CPU 0" error. "nrfx_i2s_init" is successful. I used 26, 27, 28, 29, 30 for sck_pin, lrck_pin, mck_pin, sdout_pin and sdin_pin respectively.
When "nrfx_i2s_start" is called, app crashed with above mentioned error.
When debugged further, crash occurred inside "nrf_i2s_task_trigger" function.
Can you please let me know how to fix this error?
Can you please let me know what pins should I be using for IN, OUT and clocks of I2S?
Can you share your I2S specific code?
Here is the code used
#include <zephyr.h>
#include <ztest.h>
#include <device.h>
#include <drivers/i2s.h>
#include <nrf.h>
#include <nrfx.h>
#include <nrfx_i2s.h>
#include "i2s_api_test.h"
static void data_handler(nrfx_i2s_buffers_t const * p_released,
uint32_t status)
{
if(p_released != NULL) {
if(p_released->p_rx_buffer != NULL) {
printf("RX buffer received\n");
} else if(p_released->p_tx_buffer) {
printf("TX buffer received\n");
} else {
printf("RX/TX buffer not received\n");
}
} else {
printf("Received buffers are NULL\n");
}
}
#define PAUSE_TIME 500
#define I2S_BUFFER_SIZE 1000
static uint32_t m_buffer_rx[I2S_BUFFER_SIZE];
static uint32_t m_buffer_tx[I2S_BUFFER_SIZE];
void test_main(void)
{
nrfx_i2s_config_t i2s_cfg = NRFX_I2S_DEFAULT_CONFIG(0, 1, 17, 20, 22);
nrfx_i2s_buffers_t nrx_buf;
nrx_buf.p_rx_buffer = m_buffer_rx;
nrx_buf.p_tx_buffer = m_buffer_tx;
err_code = nrfx_i2s_init(&i2s_cfg, data_handler);
printf("nrfx_i2s_init return code is %u\n", err_code);
for(index = 0; index < 10; index++)
{
err_code = nrfx_i2s_start(&nrx_buf, I2S_BUFFER_SIZE, 0);
printf("nrfx_i2s_start return code is %u\n", err_code);
k_sleep(K_MSEC(100));
nrfx_i2s_stop();
printf("After nrfx_i2s_stop \n");
}
}
Can you please check the above code and let me know if I am doing anything wrong?
Can you please check the above code and let me know if I am doing anything wrong?
I can't see anything wrong here, can you share the whole project so that I can debug it on my side?
I have attached my project here. I am using this for nrf5340 board.
Please help me in resolving crash issue.
Do you have any update on this?
I don't know why you're modifying an integration test sample. I attached a project the should serve as a template to test the I2S peripheral.
I'm going on vacation for a week, but I'll assign your case to another Tech Supporter.
BR,
Håkon.
Hi,
In the above provided example, nrfx_i2s_start() is not used.
My project is crashing in nrfx_i2s_start() function.
Can you please help in resolving this issue?
