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109 lines
3 KiB
C
109 lines
3 KiB
C
#include "system_dumby.h"
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#include <stm32f10x.h>
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#include "SPI.h"
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/**
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* @brief Initisalise les pin du GIO en entrée et sortie :
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* PA5 : Clock généré par le maitre
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* PA6 : Master Iutput Slave Onput (MISO)
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* PA7 : Master Output Slave Input (MOSI)
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*/
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void MAP_pinSpi(void)
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{
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GPIO_InitTypeDef Init_Structure;
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Init_Structure.GPIO_Pin = GPIO_Pin_5;
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Init_Structure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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Init_Structure.GPIO_Speed=GPIO_Speed_50MHz;
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GPIO_Init(GPIOA, &Init_Structure);
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Init_Structure.GPIO_Pin = GPIO_Pin_6;
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Init_Structure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_Init(GPIOA, &Init_Structure);
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Init_Structure.GPIO_Pin = GPIO_Pin_7;
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Init_Structure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOA, &Init_Structure);
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Init_Structure.GPIO_Pin = GPIO_Pin_13;
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Init_Structure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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Init_Structure.GPIO_Speed=GPIO_Speed_50MHz;
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GPIO_Init(GPIOC, &Init_Structure);
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// A suprimmer aprés le test
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Init_Structure.GPIO_Pin = GPIO_Pin_13;
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Init_Structure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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Init_Structure.GPIO_Speed=GPIO_Speed_50MHz;
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GPIO_Init(GPIOB, &Init_Structure);
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Init_Structure.GPIO_Pin = GPIO_Pin_14;
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Init_Structure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_Init(GPIOB, &Init_Structure);
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Init_Structure.GPIO_Pin = GPIO_Pin_15;
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Init_Structure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOB, &Init_Structure);
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}
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/**
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* @brief Configure le periphérique SPI. FullDuplex et Slave Mode;
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* Pour tester le SPI on testera les envoi et les recepetions avec l'aide du SPI2.
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* Il sera donc initialiser. Et reboucler.
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*
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*/
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void INIT_SPI(void)
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{
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SPI_InitTypeDef SPI_InitStructure;
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SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
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SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
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SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
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SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
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SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
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SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
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SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
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SPI_InitStructure.SPI_CRCPolynomial = 7;
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SPI_Init(SPI1, &SPI_InitStructure);
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SPI_Cmd(SPI1, ENABLE);
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// A suprimmer aprés le test
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SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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SPI_Init(SPI2, &SPI_InitStructure);
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}
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/**
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* @brief Configure le Rx de l'esclave (Stm32)
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*
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*/
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void INIT_IT_SPI(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure;
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/* 1 bit for pre-emption priority, 3 bits for subpriority */
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
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/* Configure and enable SPI_SLAVE interrupt --------------------------------*/
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NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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NVIC_Init(&NVIC_InitStructure);
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SPI_I2S_ITConfig(SPI1, SPI_I2S_IT_RXNE, ENABLE);
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}
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