Hi there,
I have a problem to implement the SPIM in the Network core. I cannot detect any signal from SPI_SCK & SPI_MOSI by oscilloscope and logic analyzer (no signal from other two pins SS & MISO either)
Is there anything I need to configure to enable the SPIM in Network node?
I flashed the "empty_app_core" example code to the App core
And I wrote a simple code to test the SPIM functionality (signal output in SCK and MOSI)
It is the main.c for network core.
//main on SPI master
#include <zephyr.h>
#include "nrf.h"
#include <nrfx_spim.h>
#include <string.h>
#include <logging/log.h>
#define LOG_MODULE_NAME spi_master
LOG_MODULE_REGISTER(LOG_MODULE_NAME, LOG_LEVEL_DBG);
static const nrfx_spim_t net_spim = NRFX_SPIM_INSTANCE(0);
#define APP_SPIM_CS_PIN (9)
#define APP_SPIM_SCK_PIN (7)
#define APP_SPIM_MISO_PIN (6)
#define APP_SPIM_MOSI_PIN (5)
void net_spi_init(void){
nrfx_spim_config_t spim_config =
NRFX_SPIM_DEFAULT_CONFIG(APP_SPIM_SCK_PIN, APP_SPIM_MOSI_PIN, APP_SPIM_MISO_PIN, APP_SPIM_CS_PIN);
// spim_config.frequency = NRF_SPIM_FREQ_1M;
// spim_config.mode = NRF_SPIM_MODE_1;
// spim_config.bit_order = NRF_SPIM_BIT_ORDER_MSB_FIRST;
if (NRFX_SUCCESS != nrfx_spim_init(&net_spim, &spim_config, NULL, NULL)) {
LOG_DBG("Init Failed\n");
return;
}
}
void main(void)
{
LOG_DBG("SPIM example\n");
net_spi_init();
int i = 0;
uint8_t writeReg_array[5] = "12345";
uint8_t reg_data[5] = "00000";
while(1){
nrfx_spim_xfer_desc_t xfer_desc;
xfer_desc.p_tx_buffer = writeReg_array;
xfer_desc.tx_length = 5;
xfer_desc.p_rx_buffer = NULL;
xfer_desc.rx_length = 0;
nrfx_spim_xfer(&net_spim,&xfer_desc,0);
k_sleep(K_MSEC(1000));
i++;
LOG_DBG("SPIM write test %d\n",i);
}
}
And the prj.conf file
CONFIG_SERIAL=y CONFIG_LOG=y CONFIG_HEAP_MEM_POOL_SIZE=4096 CONFIG_SPI=y CONFIG_NRFX_SPIM=y CONFIG_MAIN_STACK_SIZE=4096 CONFIG_NRFX_SPIM0=y CONFIG_RTT_CONSOLE=y CONFIG_USE_SEGGER_RTT=y CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n
I can see the log in RTT viewer
00> *** Booting Zephyr OS build v2.7.99-ncs1-1 *** 00> 00> [00:00:00.421,936] <dbg> spi_master.main: SPIM example 00> 00> [00:00:01.422,058] <dbg> spi_master.main: SPIM write test 1 00> 00> [00:00:02.422,210] <dbg> spi_master.main: SPIM write test 2 00> 00> [00:00:03.422,332] <dbg> spi_master.main: SPIM write test 3 00> 00> [00:00:04.422,454] <dbg> spi_master.main: SPIM write test 4 00> 00> [00:00:05.422,576] <dbg> spi_master.main: SPIM write test 5 00> 00> [00:00:06.422,698] <dbg> spi_master.main: SPIM write test 6 00> 00> [00:00:07.422,821] <dbg> spi_master.main: SPIM write test 7 00> 00> [00:00:08.422,943] <dbg> spi_master.main: SPIM write test 8 00> 00> [00:00:09.423,065] <dbg> spi_master.main: SPIM write test 9
However, there is no signal output from SCK and MOSI pin.
SDK version: nRF Connect toolchain v1.9.0
