mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
synced 2025-09-19 00:21:15 +08:00
f82e9be787
- fix(esp8266): - Adding includes for missing symbols. - Removing unused variables. - Skip unsupported packing pragmas. - Add rom_functions.h for symbols that come from the ESP ROM. Add attributes on ets_printf so GCC will check the syntax of the formatting string and types of the arguments. - Add ETS_GPIO_INTR_EN(DIS)ABLE macro. - Use gpio_output_conf instead of gpio_output_set. - fix(freertos): - Define functions that are useful. - Use correct printf symbols when printing. - fix(lwip): - Ignore the warning in sntp. - fix(mqtt): - `xTicksToWait` is unsigned, can't check for less than zero. Remove unused variables. - fix(newlib): - `_free_r()` returns `void`, not `void *`. - Adding includes for missing symbols. - fix(ssl): - Make sure functions always return a value. Merges https://github.com/espressif/ESP8266_RTOS_SDK/pull/188
170 lines
3.6 KiB
C
170 lines
3.6 KiB
C
#ifndef __I2C_MASTER_H__
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#define __I2C_MASTER_H__
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#include "esp8266/pin_mux_register.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_GPIO4_U
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#define I2C_MASTER_SDA_GPIO 2
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#define I2C_MASTER_SCL_GPIO 4
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#define I2C_MASTER_SDA_FUNC FUNC_GPIO2
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#define I2C_MASTER_SCL_FUNC FUNC_GPIO4
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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_conf(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_conf(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_conf(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_conf(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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/** \defgroup Driver_APIs Driver APIs
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* @brief Driver APIs
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*/
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/** @addtogroup Driver_APIs
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* @{
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*/
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/** \defgroup I2C_Driver_APIs I2C_MASTER Driver APIs
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* @brief UART driver APIs
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*/
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/** @addtogroup I2C_MASTER_Driver_APIs
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* @{
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*/
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/**
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* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
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*
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* @param null
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*
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* @return null
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*/
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void i2c_master_gpio_init(void);
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/**
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* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
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*
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* @param initilize I2C bus to enable i2c operations.
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*
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* @return null
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*/
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void i2c_master_init(void);
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#define i2c_master_wait os_delay_us
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/**
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* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
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*
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* @param set i2c to stop sending state.
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*
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* @return null
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*/
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void i2c_master_stop(void);
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/**
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* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
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*
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* @param set i2c to start sending state.
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*
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* @return null
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*/
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void i2c_master_start(void);
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/**
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* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
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*
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* @param set ack to i2c bus as level value.
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*
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* @return null
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*/
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void i2c_master_setAck(uint8 level);
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/**
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* @brief confirm if peer send ack.
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*
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* @param null
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*
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* @return null
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*/
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uint8 i2c_master_getAck(void);
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/**
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* @brief read Byte from i2c bus.
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*
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* @param null
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*
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* @return the byte which read from i2c bus.
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*/
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uint8 i2c_master_readByte(void);
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/**
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* @brief write wrdata value(one byte) into i2c.
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*
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* @param uint8 wrdata:write value
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*
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* @return null
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*/
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void i2c_master_writeByte(uint8 wrdata);
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/**
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* @brief i2c_master_checkAck.
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*
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* @param null
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*
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* @return the result of check ack
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*/
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bool i2c_master_checkAck(void);
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/**
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* @brief i2c master send Ack.
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*
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* @param null
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*
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* @return null
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*/
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void i2c_master_send_ack(void);
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/**
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* @brief i2c master send Nack.
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*
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* @param null
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*
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* @return null
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*/
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void i2c_master_send_nack(void);
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif
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