radex
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radmatrix
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wip optimize

sd2
radex 2024-05-27 13:35:22 +02:00
parent 9f9d089e08
commit fa115e88cb
Signed by: radex
SSH Key Fingerprint: SHA256:hvqRXAGG1h89yqnS+cyFTLKQbzjWD4uXIqw7Y+0ws30
1 changed files with 18 additions and 4 deletions
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22
firmware/src/leds.cpp
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@ -37,7 +37,7 @@ inline void outputEnable(uint8_t pin, bool enable) {
// we go from phase 0 to phase (COLOR_BITS-1)
uint8_t brightnessPhase = 0;
// in nanoseconds
uint16_t brightnessPhaseDelays[COLOR_BITS] = {500, 1500, 3000, 20000, 60000};
uint16_t brightnessPhaseDelays[COLOR_BITS] = {1000, 1500, 3000, 20000, 60000};
// NOTE: Alignment required to allow 4-byte reads
uint8_t framebuffer[ROW_COUNT * COL_COUNT] __attribute__((aligned(32))) = {0};
@ -115,6 +115,9 @@ void leds_render() {
auto delayTicks = brightnessPhaseDelays[brightnessPhase] / 8;
pwm_set_wrap(PWM_SLICE, delayTicks);
// allow PIO pusher to latch RCLK of the first row
pusher_pio->irq_force = 1 << 0;
// hide output
outputEnable(ROW_OE, false);
@ -153,12 +156,11 @@ void leds_render() {
pio_sm_put_blocking(pusher_pio, pusher_sm, pxValues);
}
// wait until previous row's delay is done
// NOTE: Previous row's delay interrupt sets pio irq 0
// (permission to latch RCLK)
while (!delayFinished) {
tight_loop_contents();
}
// allow pusher to latch data
pusher_pio->irq_force = 1 << 0;
// wait until pushing and RCLK latch are done
@ -184,6 +186,11 @@ void leds_render() {
brightnessPhase = (brightnessPhase + 1) % COLOR_BITS;
}
void leds_pusher_irq_handler() {
// leds_start_delay();
// pio_interrupt_clear(pusher_pio, 1);
}
void leds_initPusher() {
PIO pio = pusher_pio;
uint sm = pio_claim_unused_sm(pio, true);
@ -218,6 +225,11 @@ void leds_initPusher() {
pio_gpio_init(pio, RCLK);
pio_sm_set_consecutive_pindirs(pio, sm, RCLK, 1, true);
//
// irq_set_exclusive_handler(PIO0_IRQ_0, leds_pusher_irq_handler);
// irq_set_enabled(PIO0_IRQ_0, true);
// pio_set_irq0_source_enabled(pio, pis_interrupt1, true);
// Load our configuration, and jump to the start of the program
pio_sm_init(pio, sm, offset, &config);
pio_sm_set_enabled(pio, sm, true);
@ -233,6 +245,8 @@ void leds_start_delay() {
void leds_pwm_interrupt_handler() {
// disable output
outputEnable(ROW_OE, false);
// allow PIO pusher to latch RCLK (of the next row)
// pusher_pio->irq_force = 1 << 0;
// stop PWM counter
pwm_set_enabled(PWM_SLICE, false);
// acknowledge interrupt