using nrf connect sdk 1.4.0 and nrf9160 DK
build: nrf9160dk_nrf9160ns
SES version: V5.10d
Windows 10 Pro 64bit
1. Please note I used https_client project to implement spi slave(but have removed all the https code.. ignore the cert file)
2. Used some details from tickets this and this.. Please trust me when I say i have searched the devzone and documents as much as I could
proj.conf looks like this
# SPI
CONFIG_SPI=y
## for slave only
CONFIG_SPI_SLAVE=y
CONFIG_SPI_3_OP_MODES=3
#commented these out as per some devzone discussions
#CONFIG_SPI_3=y
#CONFIG_SPI_NRFX=y
#CONFIG_SPI_3_NRF_SPIS=y #this gives an error while opening a project if uncommented
CONFIG_RESET_ON_FATAL_ERROR=n
overlay file
&spi3 {
compatible = "nordic,nrf-spis";
status = "okay";
mosi-pin = <10>;
miso-pin = <11>;
sck-pin = <12>;
csn-pin = <13>;
def-char = <0xde>;
};
main.c/*
* Copyright (c) 2020 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: LicenseRef-BSD-5-Clause-Nordic
*/
#include <string.h>
#include <zephyr.h>
#include <stdlib.h>
#include <drivers/spi.h>
#include <nrfx.h>
#include <nrfx_uarte.h>
#include "nrfx_spis.h"
#define PIN_SCK 10
#define PIN_MOSI 11
#define PIN_MISO 12
#define PIN_CSN 13
#define SPIS_NR 3
nrfx_spis_t spis_t = NRFX_SPIS_INSTANCE(SPIS_NR);
nrfx_spis_config_t spis_config_t = NRFX_SPIS_DEFAULT_CONFIG(PIN_SCK,PIN_MOSI,PIN_MISO,PIN_CSN);
uint8_t rx_buffer[2] = {0x0};
uint8_t tx_buffer[2] = {0xa5};
void spis_event_handler_t(nrfx_spis_evt_t const *p_event, void *p_context){
printk("handler\n");
int err;
switch(p_event->evt_type){
case NRFX_SPIS_XFER_DONE:
printk("received %x, %x\n",rx_buffer[0], rx_buffer[1]);
err = nrfx_spis_buffers_set(&spis_t, tx_buffer, sizeof(tx_buffer), rx_buffer, sizeof(rx_buffer));
if(err != NRFX_SUCCESS){
printk("Error with setting.\n");
}
break;
case NRFX_SPIS_BUFFERS_SET_DONE:
printk("buffers set\n");
break;
case NRFX_SPIS_EVT_TYPE_MAX:
break;
default:
;
}
}
static void manual_isr_setup()
{
//IRQ_DIRECT_CONNECT(SPIM3_SPIS3_TWIM3_TWIS3_UARTE3_IRQn, 0, nrfx_spis_3_irq_handler, 0);
//irq_enable(SPIM3_SPIS3_TWIM3_TWIS3_UARTE3_IRQn);
IRQ_DIRECT_CONNECT(UARTE3_SPIM3_SPIS3_TWIM3_TWIS3_IRQn, 0, nrfx_spis_3_irq_handler, 0);
irq_enable(UARTE3_SPIM3_SPIS3_TWIM3_TWIS3_IRQn);
}
void init_spis(){
int err;
//change mode
spis_config_t.mode = NRF_SPIS_MODE_3;
err = nrfx_spis_init(&spis_t,&spis_config_t,spis_event_handler_t,NULL);
if(err != NRFX_SUCCESS){
printk("nrfx_spis_init - Error. %x\n",err);
} else {
printk("SPIS started.\n");
}
}
void spi_slave_test(void) {
int err;
init_spis();
manual_isr_setup();
err = nrfx_spis_buffers_set(&spis_t, tx_buffer, sizeof(tx_buffer), rx_buffer, sizeof(rx_buffer));
if(err != NRFX_SUCCESS){
printk("nrfx_spis_buffers_set - Error. %x\n", err);
}
}
void main(void)
{
printk("SPIS sample started \n\r");
spi_slave_test();
while (1) {
//printk("alive \n");
k_sleep(Z_TIMEOUT_TICKS(50000));
}
}
Notes:
I have closed the solution and opened after changing proj.conf. I am using SPIS3
Issue is that nrfx_spis_init fails with error 0xbad0005.. and the reason for that is this line in nrfx_spi.c fails
if (p_cb->state != NRFX_DRV_STATE_UNINITIALIZED)
I am just confused to see that p_cb->state is set to NRFX_DRV_STATE for some reason
m_cb[p_instance->drv_inst_idx] has valid data... that array has ONLY ONE element (given only spi3 is available) and drv_inst_idx=0;
It is clear that I a missing some configuration.. I was told to make some spis related changes using the SES ->project->configure nrf sdk project.. I tried to enable spis2 instance and spis3 driver and that made no difference.. I am sure you have some document in there somewhere in your ocean of documents explaining this but unfortunately I couldn't find any details
3. The SPI master worked without any issue.. Not that it helps but just FYI
4. attached the entire project in zip file
