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Use a proper master I2C driver.

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This commit is contained in:
Jonathan Naylor
2020-11-24 10:46:25 +00:00
parent 5e8e0577da
commit df749d3286
9 changed files with 225 additions and 219 deletions
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I2CPort.h
+27 -14
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@@ -23,9 +23,13 @@
#if !defined(I2CPORT_H)
#define I2CPORT_H
#include <cstdint>
const uint16_t I2C_TX_FIFO_SIZE = 512U;
#if defined(STM32F4XX)
#include "stm32f4xx.h"
#include "stm32f4xx_i2c.h"
#elif defined(STM32F7XX)
#include "stm32f7xx.h"
#include "stm32f7xx_i2c.h"
#endif
class CI2CPort {
@@ -34,19 +38,28 @@ public:
bool init();
uint8_t write(const uint8_t* data, uint8_t length);
void eventHandler();
uint8_t write(uint8_t addr, const uint8_t* data, uint16_t length);
private:
uint8_t m_n;
bool m_ok;
volatile uint8_t m_fifo[I2C_TX_FIFO_SIZE];
volatile uint16_t m_fifoHead;
volatile uint16_t m_fifoTail;
uint16_t fifoLevel();
bool fifoPut(uint8_t next);
I2C_TypeDef* m_port;
uint32_t m_clock;
uint32_t m_busSCL;
uint32_t m_busSDA;
uint8_t m_af;
GPIO_TypeDef* m_gpioSCL;
GPIO_TypeDef* m_gpioSDA;
uint32_t m_pinSCL;
uint32_t m_pinSDA;
uint16_t m_pinSourceSCL;
uint16_t m_pinSourceSDA;
bool m_ok;
uint8_t m_addr;
bool setAddr(uint8_t addr, uint8_t dir);
bool write(uint8_t c);
bool start();
bool waitSR1FlagsSet(uint32_t flags);
bool waitLineIdle();
};
#endif