ank/ECE3849
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add trigger disable

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This commit is contained in:
Andy Killorin 2025-04-03 15:25:09 -04:00
parent 67814ef2ce
commit 2779d26b2a
Signed by: ank
GPG key ID: 23F9463ECB67FE8C
1 changed files with 20 additions and 8 deletions
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28
main.c
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@ -144,7 +144,7 @@ int main(void) {
uint8_t voltage_scale = 0;
uint8_t time_scale = 0;
uint8_t rising = 1;
uint8_t trigger_mode = 1;
while (true) {
// calculate cpu usage
@ -158,7 +158,8 @@ int main(void) {
while (fifo_get(&button)) {
switch (button) {
case S1: // toggle edge
rising = !rising;
trigger_mode++;
trigger_mode %= 3;
break;
case S2: // draw
refresh = !refresh;
@ -203,10 +204,16 @@ int main(void) {
snprintf(str, sizeof(str), "CPU Load %.1f%%", usage_percent);
GrStringDraw(&sContext, str, /*length*/ -1, /*x*/ 0, /*y*/ HEIGHT - 10, /*opaque*/ false);
if (rising) {
GrStringDraw(&sContext, "^", /*length*/ -1, /*x*/ WIDTH - 10, /*y*/ 0, /*opaque*/ false);
} else {
GrStringDraw(&sContext, "v", /*length*/ -1, /*x*/ WIDTH - 10, /*y*/ 0, /*opaque*/ false);
switch (trigger_mode) {
case 1:
GrStringDraw(&sContext, "^", /*length*/ -1, /*x*/ WIDTH - 10, /*y*/ 0, /*opaque*/ false);
break;
case 0:
GrStringDraw(&sContext, "v", /*length*/ -1, /*x*/ WIDTH - 10, /*y*/ 0, /*opaque*/ false);
break;
case 2:
GrStringDraw(&sContext, "-", /*length*/ -1, /*x*/ WIDTH - 10, /*y*/ 0, /*opaque*/ false);
break;
}
// display graph
@ -215,7 +222,12 @@ int main(void) {
int32_t adc_current_index;
int32_t j;
if (refresh) {
int trigger = Trigger(rising);
int trigger;
if (trigger_mode == 2) {
trigger = gADCBufferIndex - (WIDTH / 2); // show latest if trigger disabled
} else {
trigger = Trigger(trigger_mode);
}
adc_current_index = trigger - (WIDTH / 2);
for (j=0; j<LOCAL_BUF_LEN; j++) {
@ -303,6 +315,6 @@ int Trigger(bool rising) // search for edge trigger
}
}
if (x == x_stop) // for loop ran to the end
x = x = gADCBufferIndex - (WIDTH / 2); // reset x back to how it was initialized
x = gADCBufferIndex - (WIDTH / 2); // reset x back to how it was initialized
return x;
}