mirror of
https://github.com/pvvx/RTL00_WEB.git
synced 2024-11-29 01:30:29 +00:00
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
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/**************************************************************************
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* Драйвер для INA219
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**************************************************************************/
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#ifndef _INA219DRV_H_
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#define _INA219DRV_H_
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#include "ina219/ina219.h"
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#include "device.h"
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#include "timer_api.h"
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#include "driver/i2c_drv.h"
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typedef struct _ina219_data {
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union {
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signed short voltage; // Voltage, 1mV
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unsigned char vuc[2];
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} v;
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union {
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signed short current; // Current, 50uA?
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unsigned char iuc[2];
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} i;
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} INA219DATA, *PINA219DATA;
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typedef struct _ina219drv {
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unsigned char status;
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unsigned char addr; // адрес INA219 на шине I2C (формат 7 bit)
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signed char init;
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unsigned char tmp;
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unsigned short config; // регистр конфигурации INA219
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unsigned short calibration; // коэф. шунта для INA219
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unsigned short count; // счетчик считанных значений
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unsigned short overrun; // счет переполнений буфера
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unsigned short errs; // счет ошибок на I2C
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unsigned short buf_idx; // объем буфера pbuf[buf_idx+1], максимальный индекс-номер замера
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unsigned short buf_rx; // индекс-номер ещё не считанного замера
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unsigned short buf_tx; // индекс-номер для записи следующего замера
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PINA219DATA pbuf;
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gtimer_t timer;
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union { // буфер
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unsigned char uc[4];
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unsigned short us[2];
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signed short ss[2];
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unsigned int ui;
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} buf_i2c;
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volatile i2c_drv_t i2c;
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} INA219DRV, *PINA219DRV;
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#define INA219_I2C_PIN_SDA PC_4
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#define INA219_I2C_PIN_SCL PC_5
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#define INA219_I2C_BUS_CLK 300000 //hz
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#define INA219_TIMER TIMER3 // используемый таймер
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#endif // _INA219DRV_H_
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