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57 lines
1.8 KiB
57 lines
1.8 KiB
#ifndef __I2C_MASTER_H__
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#define __I2C_MASTER_H__
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#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO2_U
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#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_MTMS_U
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#define I2C_MASTER_SDA_GPIO 2
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#define I2C_MASTER_SCL_GPIO 14
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#define I2C_MASTER_SDA_FUNC FUNC_GPIO2
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#define I2C_MASTER_SCL_FUNC FUNC_GPIO14
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//#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO2_U
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//#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_GPIO0_U
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//#define I2C_MASTER_SDA_GPIO 2
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//#define I2C_MASTER_SCL_GPIO 0
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//#define I2C_MASTER_SDA_FUNC FUNC_GPIO2
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//#define I2C_MASTER_SCL_FUNC FUNC_GPIO0
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#if 0
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#define I2C_MASTER_GPIO_SET(pin) \
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gpio_output_set(1<<pin,0,1<<pin,0)
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#define I2C_MASTER_GPIO_CLR(pin) \
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gpio_output_set(0,1<<pin,1<<pin,0)
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#define I2C_MASTER_GPIO_OUT(pin,val) \
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if(val) I2C_MASTER_GPIO_SET(pin);\
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else I2C_MASTER_GPIO_CLR(pin)
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#endif
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#define I2C_MASTER_SDA_HIGH_SCL_HIGH() \
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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)
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#define I2C_MASTER_SDA_HIGH_SCL_LOW() \
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gpio_output_set(1<<I2C_MASTER_SDA_GPIO, 1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
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#define I2C_MASTER_SDA_LOW_SCL_HIGH() \
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gpio_output_set(1<<I2C_MASTER_SCL_GPIO, 1<<I2C_MASTER_SDA_GPIO, 1<<I2C_MASTER_SDA_GPIO | 1<<I2C_MASTER_SCL_GPIO, 0)
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#define I2C_MASTER_SDA_LOW_SCL_LOW() \
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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)
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void i2c_master_gpio_init(void);
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void i2c_master_init(void);
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#define i2c_master_wait os_delay_us
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void i2c_master_stop(void);
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void i2c_master_start(void);
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void i2c_master_setAck(uint8 level);
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uint8 i2c_master_getAck(void);
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uint8 i2c_master_readByte(void);
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void i2c_master_writeByte(uint8 wrdata);
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bool i2c_master_checkAck(void);
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void i2c_master_send_ack(void);
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void i2c_master_send_nack(void);
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#endif
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