mirror of
https://github.com/jhbruhn/eurorack.git
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71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
#include "spi_mode.h"
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#include "peripherals.h"
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#include "stm32f3xx_hal_spi.h"
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#include <stm32f3xx_hal.h>
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SPIMode currentMode = SPI_MODE_UNINITIALIZED;
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void InitSPIDisplay(void);
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void InitSPIAD5754(void);
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void InitSPI(SPIMode mode)
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{
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if (currentMode == SPI_MODE_UNINITIALIZED) {
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__HAL_RCC_SPI2_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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// init AF GPIO
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GPIO_InitTypeDef gpio_init;
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gpio_init.Mode = GPIO_MODE_AF_PP;
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gpio_init.Speed = GPIO_SPEED_FREQ_HIGH;
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gpio_init.Pull = GPIO_NOPULL;
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gpio_init.Pin = GPIO_PIN_8 | GPIO_PIN_14 | GPIO_PIN_15;
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gpio_init.Alternate = GPIO_AF5_SPI2;
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HAL_GPIO_Init(GPIOB, &gpio_init);
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}
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if (currentMode != mode) {
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switch (mode) {
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case SPI_MODE_DISPLAY:
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InitSPIDisplay();
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break;
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case SPI_MODE_DAC1:
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InitSPIAD5754();
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break;
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case SPI_MODE_DAC0:
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case SPI_MODE_USB:
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case SPI_MODE_UNINITIALIZED:
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break;
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}
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currentMode = mode;
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}
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}
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void InitSPIAD5754(void)
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{ // the same as the display(?)
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hspi2.Init.Direction = SPI_DIRECTION_2LINES;
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hspi2.Init.Mode = SPI_MODE_MASTER;
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hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
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hspi2.Init.CLKPolarity = SPI_POLARITY_HIGH;
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hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
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hspi2.Init.NSS = SPI_NSS_SOFT;
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hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
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hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
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hspi2.Init.CRCPolynomial = 7;
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hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
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HAL_SPI_Init(&hspi2);
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}
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void InitSPIDisplay(void)
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{
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hspi2.Init.Direction = SPI_DIRECTION_2LINES;
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hspi2.Init.Mode = SPI_MODE_MASTER;
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hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
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hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
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hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
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hspi2.Init.NSS = SPI_NSS_SOFT;
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hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
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hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
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hspi2.Init.CRCPolynomial = 7;
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hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
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HAL_SPI_Init(&hspi2);
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}
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