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radmatrix
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perf tweaks

sd2
radex 2024-05-30 20:17:43 +02:00
parent 9cd5e00309
commit 91b144ff83
Signed by: radex
SSH Key Fingerprint: SHA256:hvqRXAGG1h89yqnS+cyFTLKQbzjWD4uXIqw7Y+0ws30
1 changed files with 20 additions and 18 deletions
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38
firmware/src/leds.cpp
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@ -193,25 +193,23 @@ void leds_render() {
auto buffer = ledBuffer[brightnessPhase];
auto delayData = brightnessPhaseDelays[brightnessPhase];
int bufferOffset = 0;
for (int yModule = 0; yModule < ROW_MODULES; yModule++) {
for (int moduleY = 0; moduleY < 20; moduleY++) {
// set row data
for (int xModule = 0; xModule < COL_MODULES; xModule++) {
uint32_t pxValues = buffer[bufferOffset + xModule];
pio_sm_put_blocking(leds_pio, pusher_sm, pxValues);
}
// set row selection data
uint32_t rowSelData = buffer[bufferOffset + COL_MODULES];
pio_sm_put_blocking(leds_pio, row_sm, rowSelData);
// set delay data
pio_sm_put_blocking(leds_pio, delay_sm, delayData);
// next row
bufferOffset += COL_MODULES + 1;
// The correct data to push onto PIO has been precomputed by leds_set_framebuffer
// So we only need to move the buffer onto PIO TX FIFOs to keep them full
// TODO: Rewrite this to be interrupt-based. Should be relatively easy to always keep PIO
// full via interrupts and free up most of the core's time to other tasks
for (uint8_t y = 0; y < ROW_COUNT; y++) {
// set row data
for (uint8_t x = 0; x < COL_MODULES; x++) {
auto pxValues = *buffer++;
pio_sm_put_blocking(leds_pio, pusher_sm, pxValues);
}
// set row selection data
auto rowSelData = *buffer++;
pio_sm_put_blocking(leds_pio, row_sm, rowSelData);
// set delay data
pio_sm_put_blocking(leds_pio, delay_sm, delayData);
}
// next brightness phase
@ -231,6 +229,10 @@ void leds_initPusher() {
// Shift OSR to the right, autopull
sm_config_set_out_shift(&config, true, true, 32);
// Use FIFO join to create a longer TX FIFO
// NOTE: This is not needed for the other SMs, as the px pusher will always be the bottleneck
sm_config_set_fifo_join(&config, PIO_FIFO_JOIN_TX);
// Set OUT (data) pin, connect to pad, set as output
sm_config_set_out_pins(&config, COL_SER, 1);
pio_gpio_init(pio, COL_SER);