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dsp: flash these LEDs

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This commit is contained in:
Paul Mathieu 2021-03-14 18:09:05 -07:00
parent 38542f4431
commit 5612f23181
1 changed files with 9 additions and 0 deletions
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9
dsp/main.c
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@ -9,32 +9,41 @@ void init() {
} }
int main() { int main() {
led0->output = 37;
init(); init();
while(1) { while(1) {
led0->output = 42;
uint8_t c = uart_read(uart0); uint8_t c = uart_read(uart0);
uint16_t period; uint16_t period;
if (c == 'c') { if (c == 'c') {
led0->output = 1;
period = 1493; // C4, 262.63 Hz, maybe period = 1493; // C4, 262.63 Hz, maybe
uart_writen(uart0, "C4\r\n", 4); uart_writen(uart0, "C4\r\n", 4);
} else if (c == 'd') { } else if (c == 'd') {
period = 1330; // D4, 293.66 Hz, maybe period = 1330; // D4, 293.66 Hz, maybe
uart_writen(uart0, "D4\r\n", 4); uart_writen(uart0, "D4\r\n", 4);
led0->output = 2;
} else if (c == 'e') { } else if (c == 'e') {
period = 1185; // E4, 329.63 Hz, maybe period = 1185; // E4, 329.63 Hz, maybe
uart_writen(uart0, "E4\r\n", 4); uart_writen(uart0, "E4\r\n", 4);
led0->output = 4;
} else if (c == 'f') { } else if (c == 'f') {
period = 1119; // F4, 249.23 Hz, maybe period = 1119; // F4, 249.23 Hz, maybe
uart_writen(uart0, "F4\r\n", 4); uart_writen(uart0, "F4\r\n", 4);
led0->output = 8;
} else if (c == 'g') { } else if (c == 'g') {
period = 996; // G4, 392.00 Hz, maybe period = 996; // G4, 392.00 Hz, maybe
uart_writen(uart0, "G4\r\n", 4); uart_writen(uart0, "G4\r\n", 4);
led0->output = 16;
} else if (c == 'a') { } else if (c == 'a') {
period = 887; // A4, 440.00 Hz, maybe period = 887; // A4, 440.00 Hz, maybe
uart_writen(uart0, "A4\r\n", 4); uart_writen(uart0, "A4\r\n", 4);
led0->output = 32;
} else if (c == 'b') { } else if (c == 'b') {
period = 791; // B4, 493.88 Hz, maybe period = 791; // B4, 493.88 Hz, maybe
uart_writen(uart0, "B4\r\n", 4); uart_writen(uart0, "B4\r\n", 4);
led0->output = 64;
} }
square0->period = period; square0->period = period;