a8ba31871e
- BLE peripheral applications - dr_piezo and bladder_patch projects Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
112 lines
3.7 KiB
C
112 lines
3.7 KiB
C
/*******************************************************************************
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* @file ir_i2c.h
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* @date 2024-07-17
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******************************************************************************/
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#ifndef _IR_I2C_H_
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#define _IR_I2C_H_
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#include "sdk_common.h"
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#include <stdbool.h>
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#include "nrf.h"
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#include "nrf_drv_gpiote.h"
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#define IR_I2C_INSTANCE 1 /**< I2C instance index. */
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//#define IR_I2C_INSTANCE 1 /**< I2C instance index. */
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//#define IR_I2C_SDA_PIN NRF_GPIO_PIN_MAP(0,10)
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//#define IR_I2C_SCL_PIN NRF_GPIO_PIN_MAP(0,9)
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#define IR_I2C_SDA_PIN NRF_GPIO_PIN_MAP(1,15)
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#define IR_I2C_SCL_PIN NRF_GPIO_PIN_MAP(1,14)
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/**
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* COMMAND CONSTANTS
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* Commands are 16-bit writes: bits 15:14 are 0s
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* Bits 13:10 are the command value below
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* Bits 9:0 are data for the command, but not all bits are used with all commands
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*/
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// The NOP command is included for completeness. It is a valid I2C operation.
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#define AD5272_COMMAND_NOP 0x00 // Do nothing. Why you would want to do this I don't know
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// write the 10 or 8 data bits to the RDAC wiper register (it must be unlocked first)
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#define AD5272_RDAC_WRITE 0x01
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#define AD5272_RDAC_READ 0x02 // read the RDAC wiper register
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#define AD5272_50TP_WRITE 0x03 // store RDAC setting to 50-TP
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// SW reset: refresh RDAC with last 50-TP stored value
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// If not 50-TP value, reset to 50% I think???
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// data bits are all dont cares
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#define AD5272_RDAC_REFRESH 0x04 // TODO refactor this to AD5272_SOFT_RESET
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// read contents of 50-TP in next frame, at location in data bits 5:0,
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// see Table 16 page 22 Rev D datasheet
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// location 0x0 is reserved, 0x01 is first programmed wiper location, 0x32 is 50th programmed wiper location
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#define AD5272_50TP_WIPER_READ 0x05
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/**
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* Read contents of last-programmed 50-TP location
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* This is the location used in SW Reset command 4 or on POR
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*/
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#define AD5272_50TP_LAST_USED 0x06
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#define AD5272_CONTROL_WRITE 0x07 // data bits 2:0 are the control bits
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#define AD5272_CONTROL_READ 0x08 // data bits all dont cares
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#define AD5272_SHUTDOWN 0x09 // data bit 0 set = shutdown, cleared = normal mode
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/**
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* Control bits are three bits written with command 7
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*/
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// enable writing to the 50-TP memory by setting this control bit C0
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// default is cleared so 50-TP writing is disabled
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// only 50 total writes are possible!
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#define AD5272_50TP_WRITE_ENABLE 0x01
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// enable writing to volatile RADC wiper by setting this control bit C1
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// otherwise it is frozen to the value in the 50-TP memory
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// default is cleared, can't write to the wiper
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#define AD5272_RDAC_WIPER_WRITE_ENABLE 0x02
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// enable high precision calibration by clearing this control bit C2
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// set this bit to disable high accuracy mode (dunno why you would want to)
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// default is 0 = emabled
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#define AD5272_RDAC_CALIB_DISABLE 0x04
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// 50TP memory has been successfully programmed if this bit is set
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#define AD5272_50TP_WRITE_SUCCESS 0x08
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#define AD5272_NORMAL_MODE 0x01
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#define AD5272_SHUTDOWN_MODE 0x01
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#define ADA2200_SYNCO_PIN NRF_GPIO_PIN_MAP(0,17)
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void ir_i2c_uninit(void);
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void ir_i2c_init(void);
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void ir_irq_init(void);
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void ir_irq_uninit(void);
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uint8_t ir_command_read(uint8_t device_id, uint8_t address, uint8_t *data);
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void ir_command_write(uint8_t device_id, uint8_t address, uint8_t data);
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void ad5272_i2c_is_busy(void);
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int8_t ad5272_write_and_read_rdac (uint16_t data_16_to_write);
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int16_t ad5272_read_rdac (void);
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int8_t ad5272_write_rdac (uint16_t data_16_to_write);
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void read_all_50tp (void);
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void ad5272_RDAC_refresh(void);
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void ad5272_shutdown_mode(void);
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void ad5272_normal_mode(void);
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#endif /* !_ADA5272_I2C_H_ */
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