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Working digit writing

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This commit is contained in:
Jack O'Sullivan 2024-05-11 01:43:58 +01:00
parent 030642e8cf
commit 01871949a3
1 changed files with 27 additions and 8 deletions
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35
mcu/main.c
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@ -7,20 +7,39 @@
const uint PIN_DIGIT_BASE = 18; const uint PIN_DIGIT_BASE = 18;
const uint PIN_SEGMENT_BASE = 2; const uint PIN_SEGMENT_BASE = 2;
const uint DIGITS = 4; const uint N_DIGITS = 4;
uint8_t digit_states[4] = { 0b11001100, 0b11111111, 0b10101010, 0b00101001 };
void write_digit(uint8_t digit) {
const uint mask = (0xffffffff << PIN_SEGMENT_BASE) ^ (0xffffffff << PIN_SEGMENT_BASE + 8);
gpio_put_masked(mask, (~digit & 0xff) << PIN_SEGMENT_BASE);
gpio_put_masked(mask, digit << PIN_SEGMENT_BASE);
}
int main() { int main() {
bi_decl(bi_program_description("qCLK driver.")); bi_decl(bi_program_description("qCLK driver."));
stdio_init_all(); stdio_init_all();
gpio_init(LED_PIN); for (uint i = PIN_DIGIT_BASE; i < PIN_DIGIT_BASE + N_DIGITS; i++) {
gpio_set_dir(LED_PIN, GPIO_OUT); gpio_init(i);
gpio_set_dir(i, GPIO_OUT);
gpio_put(i, 0);
}
for (uint i = PIN_SEGMENT_BASE; i < PIN_SEGMENT_BASE + 8; i++) {
gpio_init(i);
gpio_set_dir(i, GPIO_OUT);
}
write_digit(0);
while (1) { while (1) {
gpio_put(LED_PIN, 0); for (uint i = 0; i < N_DIGITS; i++) {
sleep_ms(250); uint prev = i == 0 ? N_DIGITS - 1 : i - 1;
gpio_put(LED_PIN, 1); gpio_put(PIN_DIGIT_BASE + prev, 0);
puts("Hello World\n"); write_digit(digit_states[i]);
sleep_ms(1000); gpio_put(PIN_DIGIT_BASE + i, 1);
sleep_ms(1);
}
} }
} }