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Explain why we set SS as output

pull/11/head
Alex Voinea 2021-05-17 09:11:24 +03:00
parent db98d0cf7b
commit d2d275da25
1 changed files with 1 additions and 1 deletions
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2
src/hal/spi.h
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@ -25,7 +25,7 @@ namespace spi {
gpio::Init(conf->miso_pin, gpio::GPIO_InitTypeDef(gpio::Mode::input, gpio::Pull::none));
gpio::Init(conf->mosi_pin, gpio::GPIO_InitTypeDef(gpio::Mode::output, gpio::Level::low));
gpio::Init(conf->sck_pin, gpio::GPIO_InitTypeDef(gpio::Mode::output, gpio::Level::low));
gpio::Init(conf->ss_pin, gpio::GPIO_InitTypeDef(gpio::Mode::output, gpio::Level::high));
gpio::Init(conf->ss_pin, gpio::GPIO_InitTypeDef(gpio::Mode::output, gpio::Level::high)); //the AVR requires this pin to be an output for SPI master mode to work properly.
const uint8_t spi2x = (conf->prescaler == 7) ? 0 : (conf->prescaler & 0x01);
const uint8_t spr = ((conf->prescaler - 1) >> 1) & 0x03;