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58 lines
1.7 KiB
Zig
58 lines
1.7 KiB
Zig
const std = @import("std");
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const microzig = @import("microzig");
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const peripherals = microzig.chip.peripherals;
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const TIMG0 = peripherals.TIMG0;
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const RTC_CNTL = peripherals.RTC_CNTL;
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const INTERRUPT_CORE0 = peripherals.INTERRUPT_CORE0;
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const GPIO = peripherals.GPIO;
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const dogfood: u32 = 0x50D83AA1;
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const super_dogfood: u32 = 0x8F1D312A;
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pub fn main() !void {
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TIMG0.WDTWPROTECT.raw = dogfood;
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TIMG0.WDTCONFIG0.raw = 0;
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TIMG0.WDTWPROTECT.raw = 0;
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RTC_CNTL.WDTWPROTECT.raw = dogfood;
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RTC_CNTL.WDTCONFIG0.raw = 0;
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RTC_CNTL.WDTWPROTECT.raw = 0;
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RTC_CNTL.SWD_WPROTECT.raw = super_dogfood;
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RTC_CNTL.SWD_CONF.modify(.{ .SWD_DISABLE = 1 });
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RTC_CNTL.SWD_WPROTECT.raw = 0;
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INTERRUPT_CORE0.CPU_INT_ENABLE.raw = 0;
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microzig.hal.gpio.init(LED_R_PIN, .{
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.direction = .output,
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.direct_io = true,
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});
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microzig.hal.gpio.init(LED_G_PIN, .{
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.direction = .output,
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.direct_io = true,
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});
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microzig.hal.gpio.init(LED_B_PIN, .{
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.direction = .output,
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.direct_io = true,
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});
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microzig.hal.uart.write(0, "Hello from Zig!\r\n");
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while (true) {
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GPIO.OUT.modify(.{ .DATA_ORIG = (1 << LED_R_PIN) });
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microzig.hal.uart.write(0, "R");
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microzig.core.experimental.debug.busy_sleep(100_000);
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GPIO.OUT.modify(.{ .DATA_ORIG = (1 << LED_G_PIN) });
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microzig.hal.uart.write(0, "G");
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microzig.core.experimental.debug.busy_sleep(100_000);
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GPIO.OUT.modify(.{ .DATA_ORIG = (1 << LED_B_PIN) });
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microzig.hal.uart.write(0, "B");
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microzig.core.experimental.debug.busy_sleep(100_000);
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}
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}
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const LED_R_PIN = 3; // GPIO
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const LED_G_PIN = 16; // GPIO
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const LED_B_PIN = 17; // GPIO
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