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77 lines
2.0 KiB
Zig
77 lines
2.0 KiB
Zig
const micro = @import("microzig");
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// Configures the led_pin to a hardware pin
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const led_pin = if (micro.config.has_board)
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switch (micro.config.board_name) {
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.@"Arduino Nano" => micro.Pin("D13"),
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.@"mbed LPC1768" => micro.Pin("LED-1"),
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.@"STM32F3DISCOVERY" => micro.Pin("LD3"),
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.@"STM32F4DISCOVERY" => micro.Pin("LD5"),
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.@"STM32F429IDISCOVERY" => micro.Pin("LD4"),
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else => @compileError("unknown board"),
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}
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else switch (micro.config.chip_name) {
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.@"ATmega328p" => micro.Pin("PB5"),
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.@"NXP LPC1768" => micro.Pin("P1.18"),
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.@"STM32F103x8" => micro.Pin("PC13"),
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else => @compileError("unknown chip"),
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};
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// Configures the uart index
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const uart_idx = if (micro.config.has_board)
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switch (micro.config.board_name) {
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.@"mbed LPC1768" => 1,
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.@"STM32F3DISCOVERY" => 1,
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.@"STM32F4DISCOVERY" => 2,
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else => @compileError("unknown board"),
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}
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else switch (micro.config.chip_name) {
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.@"NXP LPC1768" => 1,
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else => @compileError("unknown chip"),
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};
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pub fn main() !void {
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const led = micro.Gpio(led_pin, .{
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.mode = .output,
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.initial_state = .low,
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});
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led.init();
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var uart = micro.Uart(uart_idx).init(.{
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.baud_rate = 9600,
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.stop_bits = .one,
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.parity = null,
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.data_bits = .eight,
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}) catch |err| {
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blinkError(led, err);
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micro.hang();
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};
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var out = uart.writer();
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while (true) {
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led.setToHigh();
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try out.writeAll("Hello microzig!\r\n");
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led.setToLow();
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micro.debug.busySleep(100_000);
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}
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}
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fn blinkError(led: anytype, err: micro.uart.InitError) void {
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var blinks: u3 =
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switch (err) {
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error.UnsupportedBaudRate => 1,
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error.UnsupportedParity => 2,
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error.UnsupportedStopBitCount => 3,
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error.UnsupportedWordSize => 4,
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};
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while (blinks > 0) : (blinks -= 1) {
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led.setToHigh();
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micro.debug.busySleep(1_000_000);
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led.setToLow();
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micro.debug.busySleep(1_000_000);
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}
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}
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