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ST7789: Separate code paths for future DMA/PIO support.

driver/sh1107
Phil Howard 2022-06-09 12:23:32 +01:00
rodzic bfea30b662
commit 1d32b967c2
1 zmienionych plików z 20 dodań i 18 usunięć
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38
drivers/st7789/st7789.cpp
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@ -245,33 +245,35 @@ namespace pimoroni {
}
void ST7789::update(PicoGraphics *graphics) {
if(graphics->pen_type == PicoGraphics::PEN_RGB565) {
command(reg::RAMWR, width * height * sizeof(uint16_t), (const char*)graphics->get_data());
} else {
uint8_t command = reg::RAMWR;
uint8_t cmd = reg::RAMWR;
if(graphics->pen_type == PicoGraphics::PEN_RGB565) { // Display buffer is screen native
command(cmd, width * height * sizeof(uint16_t), (const char*)graphics->get_data());
} else if(spi) { // SPI Bus
gpio_put(dc, 0); // command mode
gpio_put(cs, 0);
if(spi) {
spi_write_blocking(spi, &command, 1);
} else {
write_blocking_parallel(&command, 1);
}
spi_write_blocking(spi, &cmd, 1);
gpio_put(dc, 1); // data mode
uint16_t row_buf[width];
for(auto y = 0u; y < height; y++) {
graphics->get_data(y, &row_buf);
// TODO: Add DMA->SPI / PIO while we prep the next row
if(spi) {
spi_write_blocking(spi, (const uint8_t*)row_buf, width * sizeof(uint16_t));
} else {
write_blocking_parallel((const uint8_t*)row_buf, width * sizeof(uint16_t));
}
spi_write_blocking(spi, (const uint8_t*)row_buf, width * sizeof(uint16_t));
}
gpio_put(cs, 1);
} else { // Parallel Bus
gpio_put(dc, 0); // command mode
gpio_put(cs, 0);
write_blocking_parallel(&cmd, 1);
gpio_put(dc, 1); // data mode
uint16_t row_buf[width];
for(auto y = 0u; y < height; y++) {
graphics->get_data(y, &row_buf);
// TODO: Add DMA->SPI / PIO while we prep the next row
write_blocking_parallel((const uint8_t*)row_buf, width * sizeof(uint16_t));
}
gpio_put(cs, 1);