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add spi

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This commit is contained in:
Conor Patrick
2019-01-05 20:58:39 -05:00
parent ccac725b7f
commit 4c6f0969c1
3 changed files with 1789 additions and 0 deletions
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46
targets/stm32l432/src/init.c
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@ -33,6 +33,7 @@
#include "stm32l4xx_ll_bus.h"
#include "stm32l4xx_ll_tim.h"
#include "stm32l4xx_ll_rng.h"
#include "stm32l4xx_ll_spi.h"
#include "stm32l4xx_ll_usb.h"
#include "stm32l4xx_hal_pcd.h"
#include "stm32l4xx_hal.h"
@ -62,6 +63,7 @@ static void MX_USART1_UART_Init(void);
static void MX_TIM2_Init(void);
static void MX_TIM6_Init(void);
static void MX_RNG_Init(void);
static void MX_SPI1_Init(void);
#define Error_Handler() _Error_Handler(__FILE__,__LINE__)
void _Error_Handler(char *file, int line);
@ -83,6 +85,7 @@ void hw_init(void)
MX_TIM2_Init(); // PWM for LEDs
MX_TIM6_Init(); // ~1 ms timer
MX_SPI1_Init();
#if DEBUG_LEVEL > 0
MX_USART1_UART_Init();// debug uart
@ -416,3 +419,46 @@ static void MX_RNG_Init(void)
LL_RNG_Enable(RNG);
}
/* SPI1 init function */
static void MX_SPI1_Init(void)
{
LL_SPI_InitTypeDef SPI_InitStruct;
LL_GPIO_InitTypeDef GPIO_InitStruct;
/* Peripheral clock enable */
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SPI1);
/**SPI1 GPIO Configuration
PA5 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = LL_GPIO_PIN_5|LL_GPIO_PIN_6|LL_GPIO_PIN_7;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
GPIO_InitStruct.Alternate = LL_GPIO_AF_5;
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* SPI1 parameter configuration*/
SPI_InitStruct.TransferDirection = LL_SPI_FULL_DUPLEX;
SPI_InitStruct.Mode = LL_SPI_MODE_MASTER;
SPI_InitStruct.DataWidth = LL_SPI_DATAWIDTH_8BIT;
SPI_InitStruct.ClockPolarity = LL_SPI_POLARITY_LOW;
SPI_InitStruct.ClockPhase = LL_SPI_PHASE_1EDGE;
SPI_InitStruct.NSS = LL_SPI_NSS_SOFT;
SPI_InitStruct.BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV64;
SPI_InitStruct.BitOrder = LL_SPI_MSB_FIRST;
SPI_InitStruct.CRCCalculation = LL_SPI_CRCCALCULATION_DISABLE;
SPI_InitStruct.CRCPoly = 7;
LL_SPI_Init(SPI1, &SPI_InitStruct);
LL_SPI_SetStandard(SPI1, LL_SPI_PROTOCOL_MOTOROLA);
LL_SPI_EnableNSSPulseMgt(SPI1);
}