i2c_master.h 1.9 KB

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  1. #ifndef __I2C_MASTER_H__
  2. #define __I2C_MASTER_H__
  3. #define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO2_U
  4. #define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_MTMS_U
  5. #define I2C_MASTER_SDA_GPIO 2
  6. #define I2C_MASTER_SCL_GPIO 14
  7. #define I2C_MASTER_SDA_FUNC FUNC_GPIO2
  8. #define I2C_MASTER_SCL_FUNC FUNC_GPIO14
  9. //#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO2_U
  10. //#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_GPIO0_U
  11. //#define I2C_MASTER_SDA_GPIO 2
  12. //#define I2C_MASTER_SCL_GPIO 0
  13. //#define I2C_MASTER_SDA_FUNC FUNC_GPIO2
  14. //#define I2C_MASTER_SCL_FUNC FUNC_GPIO0
  15. #if 0
  16. #define I2C_MASTER_GPIO_SET(pin) \
  17. gpio_output_set(1<<pin,0,1<<pin,0)
  18. #define I2C_MASTER_GPIO_CLR(pin) \
  19. gpio_output_set(0,1<<pin,1<<pin,0)
  20. #define I2C_MASTER_GPIO_OUT(pin,val) \
  21. if(val) I2C_MASTER_GPIO_SET(pin);\
  22. else I2C_MASTER_GPIO_CLR(pin)
  23. #endif
  24. #define I2C_MASTER_SDA_HIGH_SCL_HIGH() \
  25. gpio_output_set(1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
  26. #define I2C_MASTER_SDA_HIGH_SCL_LOW() \
  27. gpio_output_set(1<<I2C_MASTER_SDA_GPIO, 1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
  28. #define I2C_MASTER_SDA_LOW_SCL_HIGH() \
  29. gpio_output_set(1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
  30. #define I2C_MASTER_SDA_LOW_SCL_LOW() \
  31. gpio_output_set(0, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
  32. void i2c_master_gpio_init(void);
  33. void i2c_master_init(void);
  34. #define i2c_master_wait os_delay_us
  35. void i2c_master_stop(void);
  36. void i2c_master_start(void);
  37. void i2c_master_setAck(uint8 level);
  38. uint8 i2c_master_getAck(void);
  39. uint8 i2c_master_readByte(void);
  40. void i2c_master_writeByte(uint8 wrdata);
  41. bool i2c_master_checkAck(void);
  42. void i2c_master_send_ack(void);
  43. void i2c_master_send_nack(void);
  44. #endif