void
sblinky_spis_cfg(int spi_num)
{
struct hal_spi_settings my_spi;
my_spi.data_order = HAL_SPI_MSB_FIRST;
my_spi.data_mode = HAL_SPI_MODE0;
my_spi.baudrate = SPI_BAUDRATE;
my_spi.word_size = HAL_SPI_WORD_SIZE_8BIT;
assert(hal_spi_config(spi_num, &my_spi) == 0);
hal_spi_set_txrx_cb(spi_num, sblinky_spi_irqs_handler, spi_cb_arg);
}
void
task1_handler(void *arg)
{
int i;
int rc;
uint16_t rxval;
uint8_t last_val;
uint8_t spi_nb_cntr;
uint8_t spi_b_cntr;
/* Set the led pin for the E407 devboard */
g_led_pin = LED_BLINK_PIN;
hal_gpio_init_out(g_led_pin, 1);
/* Use SS pin for testing */
hal_gpio_init_out(SPI_SS_PIN, 1);
sblinky_spi_cfg(0);
hal_spi_set_txrx_cb(0, NULL, NULL);
hal_spi_enable(0);
/*
* Send some bytes in a non-blocking manner to SPI using tx val. The
* slave should send back 0x77.
*/
g_spi_tx_buf[0] = 0xde;
g_spi_tx_buf[1] = 0xad;
g_spi_tx_buf[2] = 0xbe;
g_spi_tx_buf[3] = 0xef;
hal_gpio_write(SPI_SS_PIN, 0);
for (i = 0; i < 4; ++i) {
rxval = hal_spi_tx_val(0, g_spi_tx_buf[i]);
assert(rxval == 0x77);
g_spi_rx_buf[i] = (uint8_t)rxval;
}
hal_gpio_write(SPI_SS_PIN, 1);
++g_spi_xfr_num;
/* Set up the callback to use when non-blocking API used */
hal_spi_disable(0);
spi_cb_arg = &spi_cb_obj;
spi_cb_obj.txlen = 32;
hal_spi_set_txrx_cb(0, sblinky_spi_irqm_handler, spi_cb_arg);
hal_spi_enable(0);
spi_nb_cntr = 0;
spi_b_cntr = 0;
while (1) {
/* Wait one second */
os_time_delay(OS_TICKS_PER_SEC);
/* Toggle the LED */
hal_gpio_toggle(g_led_pin);
/* Get random length to send */
g_last_tx_len = spi_cb_obj.txlen;
spi_cb_obj.txlen = (rand() & 0x1F) + 1;
memcpy(g_spi_last_tx_buf, g_spi_tx_buf, g_last_tx_len);
last_val = g_spi_last_tx_buf[g_last_tx_len - 1];
for (i= 0; i < spi_cb_obj.txlen; ++i) {
g_spi_tx_buf[i] = (uint8_t)(last_val + i);
}
if (g_spi_xfr_num & 1) {
/* Send non-blocking */
++spi_nb_cntr;
assert(hal_gpio_read(SPI_SS_PIN) == 1);
hal_gpio_write(SPI_SS_PIN, 0);
#if 0
if (spi_nb_cntr == 7) {
g_spi_null_rx = 1;
rc = hal_spi_txrx_noblock(0, g_spi_tx_buf, NULL, 32);
} else {
g_spi_null_rx = 0;
rc = hal_spi_txrx_noblock(0, g_spi_tx_buf, g_spi_rx_buf, 32);
}
assert(!rc);
#else
g_spi_null_rx = 0;
rc = hal_spi_txrx_noblock(0, g_spi_tx_buf, g_spi_rx_buf,
spi_cb_obj.txlen);
assert(!rc);
console_printf("a transmitted: ");
for (i = 0; i < spi_cb_obj.txlen; i++) {
console_printf("%2x ", g_spi_tx_buf[i]);
}
console_printf("\n");
console_printf("received: ");
for (i = 0; i < spi_cb_obj.txlen; i++) {
console_printf("%2x ", g_spi_rx_buf[i]);
}
console_printf("\n");
#endif
} else {
/* Send blocking */
++spi_b_cntr;
assert(hal_gpio_read(SPI_SS_PIN) == 1);
hal_gpio_write(SPI_SS_PIN, 0);
#if 0
if (spi_b_cntr == 7) {
g_spi_null_rx = 1;
rc = hal_spi_txrx(0, g_spi_tx_buf, NULL, 32);
spi_b_cntr = 0;
} else {
g_spi_null_rx = 0;
rc = hal_spi_txrx(0, g_spi_tx_buf, g_spi_rx_buf, 32);
}
assert(!rc);
hal_gpio_write(SPI_SS_PIN, 1);
spitest_validate_last(spi_cb_obj.txlen);
#else
rc = hal_spi_txrx(0, g_spi_tx_buf, g_spi_rx_buf, spi_cb_obj.txlen);
assert(!rc);
hal_gpio_write(SPI_SS_PIN, 1);
console_printf("b transmitted: ");
for (i = 0; i < spi_cb_obj.txlen; i++) {
console_printf("%2x ", g_spi_tx_buf[i]);
}
console_printf("\n");
console_printf("received: ");
for (i = 0; i < spi_cb_obj.txlen; i++) {
console_printf("%2x ", g_spi_rx_buf[i]);
}
console_printf("\n");
spitest_validate_last(spi_cb_obj.txlen);
++g_spi_xfr_num;
#endif
}
}
}
