[syntax=c]#include "stm32f429xx.h"
uint8_t USART6_BUF[50];
uint8_t data_0 = 0;
uint8_t data_1 = 0;
int16_t DATA = 1540;
uint8_t i = 0;
uint8_t adres1 = 0x20;
uint8_t adres2 = 0x21;
uint8_t settings1 = 0b10010010;
uint8_t settings2 = 0b11100000;
int main(void){
RCC->AHB1ENR |= (1<<2) | (1<<4); // GPIO C,E CLOCK ENABLE
RCC->APB2ENR |= (1<<5) | (1<<13); // USART6, SPI4 CLOCK ENABLE
GPIOC->MODER |= (1<<13) | (1<<15); // PC6,PC7 - ALTERNATE FUNCTION
GPIOC->OSPEEDR |= (1<<12) | (1<<13) | (1<<14) | (1<<15); // PC6,PC7 - VERY HIGH SPEED
GPIOC->PUPDR |= (1<<12) | (1<<14); // PC6,PC7 - PULL UP
GPIOC->AFR[0] |= (1<<27) | (1<<31); // PC6,PC7 - AF8 (PC6 - TX, PC7 - RX)
GPIOE->MODER |= (1<<5) | (1<<11) | (1<<13); // PE2,PE5,PE6 - ALTERNATE FUNCTION
GPIOE->OSPEEDR |= (1<<4) | (1<<5) | (1<<10) | (1<<11) | (1<<12) | (1<<13); // PE2,PE5,PE6 - VERY HIGH SPEED
GPIOE->AFR[0] |= (1<<8) | (1<<10) | (1<<20) | (1<<22) | (1<<24) | (1<<26); // PE2,PE5,PE6 - ALTERNATE FUNCTION (PE2 - SCK, PE5 - MISO, PE6 - MOSI)
USART6->CR1 |= (1<<13); // USART6 ENABLE
USART6->BRR |= 16000000/115200; // BAUD RATE = 115200
USART6->CR1 |= (1<<6); // TCIE = 1
USART6->CR1 |= (1<<3); // TE = 1
SPI4->CR1 |= (1<<4); // PRESCALER = 8
SPI4->CR1 |= (1<<9) | (1<<8); // NSS - IGNORED
SPI4->CR1 |= (1<<1); //CPOL = 1
SPI4->CR1 |= (1<<2); // MASTER MODE
SPI4->CR2 |= (1<<7) | (1<<8); // TXEIE = 1, RXNEIE = 1
SPI4->CR1 |= (1<<6); // SPI4 ENABLE
SysTick_Config(16000000/50);
while(SPI4->SR == (SPI4->SR || (1<<1)) );
SPI4->DR = adres1;
while(SPI4->SR == (SPI4->SR || (1<<1)) );
SPI4->DR = settings1;
while(SPI4->SR == (SPI4->SR || (1<<1)) );
SPI4->DR = adres2;
while(SPI4->SR == (SPI4->SR || (1<<1)) );
SPI4->DR = settings2;
while(1)
{
while(SPI4->SR == (SPI4->SR || (1<<1)) );
SPI4->DR = (0x2A || 0b10000000); // READ Y LOW PART VALUE
while(SPI4->SR == (SPI4->SR || (0<<0)) );
data_0 = SPI4->DR;
while(SPI4->SR == (SPI4->SR || (1<<1)) );
SPI4->DR = (0x2B || 0b10000000); // READ Y HIGH PART VALUE
while(SPI4->SR == (SPI4->SR || (0<<0)) );
data_1 = SPI4->DR;
DATA = ((data_1<<8)|(data_0));
itoa(DATA, USART6_BUF, 10);
}
} // main
void SysTick_Handler(void)
{
while(USART6->SR == (USART6->DR || (0<<6)));
if(USART6_BUF[i] != 0)
{
USART6->DR = USART6_BUF[i];
i++;
}
else
{
USART6->DR = 0x0D;
i = 0;
}
} // SysTick_Handler[/syntax]Statystyki: Napisane przez piechu — 16 lut 2017, o 20:35
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