klipper/src/spicmds.c

23 lines
710 B
C

// Commands for sending messages on an SPI bus
//
// Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
#include "board/gpio.h" // gpio_out_write
#include "command.h" // DECL_COMMAND
void
command_send_spi_message(uint32_t *args)
{
// For now, this only implements enough to program an ad5206 digipot
uint8_t len = args[1];
char *msg = (void*)(size_t)args[2];
spi_config();
struct gpio_out pin = gpio_out_setup(args[0], 0);
spi_transfer(msg, len);
gpio_out_write(pin, 1);
sendf("spi_response response=%*s", len, msg);
}
DECL_COMMAND(command_send_spi_message, "send_spi_message pin=%u msg=%*s");