int cmd_init_slave(int argc, char **argv)
{
int res;
spi_master = -1;
if (parse_spi_dev(argc, argv) < 0) {
return 1;
}
spi_acquire(spi_dev);
res = spi_init_slave(spi_dev, spi_mode, slave_on_data);
spi_release(spi_dev);
if (res < 0) {
printf("spi_init_slave: error initializing SPI_%i device (code: %i)\n",
spi_dev, res);
return 1;
}
res = gpio_init_int(spi_cs, GPIO_IN, GPIO_FALLING, slave_on_cs, 0);
if (res < 0){
printf("gpio_init_int: error initializing GPIO_%ld as CS line (code %i)\n",
(long)spi_cs, res);
return 1;
}
spi_master = 0;
printf("SPI_%i successfully initialized as slave, cs: GPIO_%ld, mode: %i\n",
spi_dev, (long)spi_cs, spi_mode);
return 0;
}
int cmd_init_master(int argc, char **argv)
{
int res;
spi_master = -1;
if (parse_spi_dev(argc, argv) < 0) {
return 1;
}
spi_acquire(spi_dev);
res = spi_init_master(spi_dev, spi_mode, spi_speed);
spi_release(spi_dev);
if (res < 0) {
printf("spi_init_master: error initializing SPI_%i device (code %i)\n",
spi_dev, res);
return 1;
}
res = gpio_init(spi_cs, GPIO_OUT);
if (res < 0){
printf("gpio_init: error initializing GPIO_%ld as CS line (code %i)\n",
(long)spi_cs, res);
return 1;
}
gpio_set(spi_cs);
spi_master = 1;
printf("SPI_%i successfully initialized as master, cs: GPIO_%ld, mode: %i, speed: %i\n",
spi_dev, (long)spi_cs, spi_mode, spi_speed);
return 0;
}
void cmd_init_slave(int argc, char **argv)
{
int res;
spi_master = -1;
if (parse_spi_dev(argc, argv) < 0) {
return;
}
res = spi_init_slave(spi_dev, spi_mode, slave_on_data);
if (res < 0) {
printf("spi_init_slave: error initializing SPI_%i device (code: %i)\n", spi_dev, res);
}
res = gpio_init_int(spi_cs, GPIO_NOPULL, GPIO_FALLING, slave_on_cs, 0);
if (res < 0){
printf("gpio_init_int: error initializing GPIO_%i as CS line (code %i)\n", spi_cs, res);
}
spi_master = 0;
printf("SPI_%i successfully initialized as slave, cs: GPIO_%i, mode: %i\n",
spi_dev, spi_cs, spi_mode);
return;
}
void cmd_init_master(int argc, char **argv)
{
int res;
spi_master = -1;
if (parse_spi_dev(argc, argv) < 0) {
return;
}
res = spi_init_master(spi_dev, spi_mode, spi_speed);
if (res < 0) {
printf("spi_init_master: error initializing SPI_%i device (code %i)\n", spi_dev, res);
}
res = gpio_init_out(spi_cs, GPIO_PULLUP);
if (res < 0){
printf("gpio_init_out: error initializing GPIO_%i as CS line (code %i)\n", spi_cs, res);
}
gpio_set(spi_cs);
spi_master = 1;
printf("SPI_%i successfully initialized as master, cs: GPIO_%i, mode: %i, speed: %i\n",
spi_dev, spi_cs, spi_mode, spi_speed);
return;
}