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Fix self driving mode

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There was no need to have a timer do the key group switching routine. Not only would that have to be syncronized to the main loop somehow (or run very slowly),
it's also quite an overhead to keep track of.

Just switching to the next key group after we're done scanning the current one, syncronously, works far better (and faster!).
This commit is contained in:
Oliver Parczyk 2023-12-16 12:03:25 +01:00
parent 4c1658a3c6
commit 7bf222228e
1 changed files with 7 additions and 20 deletions
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27
src/main.cpp
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@ -11,8 +11,6 @@
#define POWER_SUPPLY_CHECK_PIN 13
#define SELF_DRIVE_INTERVAL 100
const uint8_t group_pins[KEY_GROUP_NUM] {14, 15, 16, 17, 18, 19, 20, 21, 22};
// not KEY0%6..not KEY5%6
@ -21,8 +19,7 @@ const uint8_t key_pins[KEY_PINS] {2, 3, 4, 5, 6, 7};
uint8_t keys_pressed[NUMBER_OF_KEYS];
// K1, K2, K3, K4, K5, K12, K13, K14, K15
const uint8_t self_drive_pins[KEY_GROUP_NUM] {8, 9, 10, 11, 12, 26, 23, 24, 25};
volatile uint8_t current_self_drive_pin = 0;
IntervalTimer self_drive_timer = IntervalTimer();
uint8_t current_self_drive_pin = 0;
// Map the current array and pressed key to a MIDI note
uint8_t mapToMidi(uint8_t active_key_group, uint8_t key) {
@ -76,23 +73,12 @@ int8_t getActiveKeyGroup() {
// Set the next self drive pin
FASTRUN void nextSelfDrivePin() {
// Set the current pin to high
digitalWriteFast(self_drive_pins[current_self_drive_pin!=0?current_self_drive_pin-1:KEY_GROUP_NUM-1], LOW);
digitalWriteFast(self_drive_pins[current_self_drive_pin], HIGH);
// Set the next pin
current_self_drive_pin = (current_self_drive_pin + 1) % KEY_GROUP_NUM;
}
// Interrupt for power supply check
FASTRUN void powerStateChanged() {
uint8_t state = digitalReadFast(POWER_SUPPLY_CHECK_PIN);
// ! inverted
if (state == LOW) {
current_self_drive_pin = 0;
self_drive_timer.begin(nextSelfDrivePin, SELF_DRIVE_INTERVAL);
} else {
self_drive_timer.end();
}
}
// Initial start function
void setup() {
// Set all in- and outputs
@ -104,10 +90,6 @@ void setup() {
pinMode(key_pins[i], INPUT);
}
pinMode(POWER_SUPPLY_CHECK_PIN, INPUT);
// Manual call, so we can set the initial state
powerStateChanged();
// Setup interrupt for power supply
attachInterrupt(POWER_SUPPLY_CHECK_PIN, []() { while (true); }, CHANGE);
}
// Main loop
@ -153,4 +135,9 @@ void loop() {
// MIDI Controllers should discard incoming MIDI messages.
while (usbMIDI.read()) {
}
// switch to next key group, if self powered
if (digitalReadFast(POWER_SUPPLY_CHECK_PIN) == LOW) {
nextSelfDrivePin();
}
}