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WIP: init real SPI

This commit is contained in:
Lukas F. Hartmann 2024-04-08 22:14:39 +02:00
parent deb1b816ce
commit 638b536ce0
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GPG Key ID: 376511EB67AD7BAF
1 changed files with 39 additions and 2 deletions
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41
pocket-reform-sysctl-fw/sysctl.c
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@ -3,6 +3,7 @@
#include "pico/binary_info.h"
#include "pico/sleep.h"
#include "hardware/i2c.h"
#include "hardware/spi.h"
#include "hardware/irq.h"
#include "hardware/rtc.h"
#include "fusb302b.h"
@ -873,10 +874,26 @@ void on_uart_rx() {
}
}
#define SPI_BUF_LEN 0x100
uint8_t spi_out_buf[SPI_BUF_LEN];
uint8_t spi_in_buf[SPI_BUF_LEN];
void init_spi_client() {
spi_init(spi1, 1000 * 1000);
// we don't appreciate the wording, but it's the API we are given
spi_set_slave(spi1, true);
gpio_set_function(PIN_SOM_MOSI, GPIO_FUNC_SPI);
gpio_set_function(PIN_SOM_MISO, GPIO_FUNC_SPI);
gpio_set_function(PIN_SOM_SS0, GPIO_FUNC_SPI);
gpio_set_function(PIN_SOM_SCK, GPIO_FUNC_SPI);
printf("[init_spi_client] done.\n");
}
int main() {
//set_sys_clock_48mhz();
stdio_init_all();
init_spi_client();
// UART to keyboard
uart_init(UART_ID, BAUD_RATE);
@ -890,6 +907,7 @@ int main() {
//irq_set_enabled(UART_IRQ, true);
//uart_set_irq_enables(UART_ID, true, false); // bool rx_has_data, bool tx_needs_data
// UART to som
uart_init(uart0, BAUD_RATE);
uart_set_format(uart0, DATA_BITS, STOP_BITS, PARITY);
uart_set_hw_flow(uart0, false, false);
@ -948,7 +966,7 @@ int main() {
gpio_put(PIN_LED_B, 0);
// TODO: actual SPI bus
gpio_init(PIN_SOM_MOSI);
/*gpio_init(PIN_SOM_MOSI);
gpio_init(PIN_SOM_SS0);
gpio_init(PIN_SOM_SCK);
gpio_init(PIN_SOM_MISO);
@ -959,7 +977,7 @@ int main() {
gpio_put(PIN_SOM_MOSI, 0);
gpio_put(PIN_SOM_SS0, 0);
gpio_put(PIN_SOM_SCK, 0);
gpio_put(PIN_SOM_MISO, 0);
gpio_put(PIN_SOM_MISO, 0);*/
//gpio_set_pulls(PIN_SOM_MOSI, 0, 0);
//gpio_set_pulls(PIN_SOM_MISO, 0, 0);
//gpio_set_pulls(PIN_SOM_SS0, 0, 0);
@ -993,10 +1011,29 @@ int main() {
printf("[pocket-sysctl] entering main loop.\n");
while (true) {
// handle commands from keyboard
while (uart_is_readable(UART_ID)) {
handle_commands(uart_getc(UART_ID));
}
while (spi_is_readable(spi1)) {
// 0x01 is some "repeated tx data"
spi_read_blocking(spi1, 0x01, spi_in_buf, 1);
printf("[spi read] %02x\n", spi_in_buf[0]);
}
// handle commands over usb serial
int usb_c = getchar_timeout_us(0);
if (usb_c != PICO_ERROR_TIMEOUT) {
printf("[acm command] '%x'\n", usb_c);
if (usb_c == '1') {
turn_som_power_on();
}
else if (usb_c == '0') {
turn_som_power_off();
}
}
if (state == 0) {
gpio_put(PIN_LED_R, 0);
power_objects = 0;