On Fri, 2021-11-26 at 16:35 +0300, Ivan Ivanov wrote:
> > Both CMP and WPS bits got set in the status register. The chip was
> > successfully flashed after both bits were cleared.
>
> I'm curious: Please tell, how you clear these CMP and WPS bits? What
> command do you run to do this?
https://github.com/yanovich/spitest.git
The head commit is for SR3 (it is where WPS is).
I've used a debian bullseye bootstrap and schroot with multiarch to
build this tools for raspberry pi. Then from RPi (with raspberry
provided fork of debian):
$ ./spitest /dev/spidev0.0
CC=arm-linux-gnueabihf-gcc
PROGRAM=spitest
.PHONY: all
all: $(PROGRAM)
%.o: %.c *.h Makefile
$(CC) -c $< -o $@
$(PROGRAM): $(PROGRAM).o
$(CC) -o $@ $^
clean:
rm *.o $(PROGRAM)
test: all
./$(PROGRAM)
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/spi/spidev.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
int spi_exec (int fd, unsigned char *inbuf, int inlen, unsigned char *outbuf, int outlen) {
struct spi_ioc_transfer xfer[2];
memset(xfer, 0, sizeof xfer);
memset(outbuf, 0, outlen);
xfer[0].tx_buf = (unsigned long) inbuf;
xfer[0].len = inlen;
xfer[1].rx_buf = (unsigned long) outbuf;
xfer[1].len = outlen;
return ioctl(fd, SPI_IOC_MESSAGE(2), xfer);
}
void print_bufs (unsigned char *inbuf, int inlen, unsigned char *outbuf, int outlen, int status) {
unsigned char *bp;
printf("request: ");
for (bp = inbuf; inlen; inlen--)
printf("%02x ", *bp++);
printf("\n");
printf("response(%d): ", status);
for (bp = outbuf; outlen; outlen--)
printf("%02x ", *bp++);
printf("\n");
printf("\n");
}
int main(int argc, char **argv)
{
char *name;
int fd;
unsigned char inbuf[32], outbuf[32];
int status;
unsigned int speed_hz = 2000000;
name = argv[1];
fd = open(name, O_RDWR);
if (fd < 0) {
perror("open");
return 1;
}
status = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed_hz);
if (status < 0) {
perror("SPI_IOC_WR_MAX_SPEED_HZ");
return -1;
}
/*
* Send a GetID command
*/
memset(inbuf, 0, sizeof inbuf);
inbuf[0] = 0x06;
status = spi_exec(fd, inbuf, 1, outbuf, 0);
if (status < 0) {
perror("SPI_IOC_MESSAGE");
return -1;
}
/*
* Send a GetID command
*/
inbuf[0] = 0x11;
inbuf[1] = 0x60;
status = spi_exec(fd, inbuf, 2, outbuf, 0);
if (status < 0) {
perror("SPI_IOC_MESSAGE");
return -1;
}
return 0;
}
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