Arduino Drivers

This repo is a collection C libs written for Arduino Uno R3 when I learn it. Arduino IDE/API is NOT used, while avr-as/avr-gcc/avrdude are used directly.

Development Env:

• OS: CentOS7
• Assembler: avr-as
• C compiler: avr-gcc
• Programmer: avrdude
• Hardware: Arduino Uno R3

Learn Arduino the harder way. Learn Arduino from the scratch. Learn Arduino with Assebly and C.

Servo motor driver

Usage

#include "XqServo.h"

XqServo m1;	
xqServoInit(&m1, 2); /* Pin 2 for PWM */
xqServoSetPos(30);

DS1307 RTC driver

Usage

#include "XqDs1307.h"

unsigned char hour, min, second;
unsigned char year, mon, day, dow;

xqDs1307Init();
xqDs1307SetTime(20,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF);
xqDs1307GetTime(&year, &mon, &day, &dow, &hour, &min, &second);

I2C driver

Usage

#include "XqI2c.h"

xqI2cInit();

xqI2cStart();
xqI2cWriteByte(0xD0);
xqI2cWriteByte(0x00);
xqI2cStop();

xqI2cStart();
xqI2cWriteByte(0xD1);
xqI2cReadByte(1);
xqI2cReadByte(1);
xqI2cReadByte(0);
xqI2cStop();

Virtual UART driver

Usage

#include "XqVirtualUart.h"	

XqVirtualUart s0;
int main()
{
	xqVirtualUartInit(&s0, 9, 8, 9600); /* Tx: pin 9, Rx: pin 8 */
	while(1){
		unsigned char byte_in = xqVirtualUartRecvByte(&s0);
		xqVirtualUartSendByte(&s0, byte_in);
	}
	return 0;
}

SPI driver

Usage

#include "XqSpi.h"

unsigned char pin_slave_1 = 8;
unsigned char byte_out = 'O';
unsigned char byte_in;	

xqSpiInit(XQ_SPI_MODE_MASTER);
xqSpiAddSlave(pin_slave_1);

xqSpiEnableSlave(pin_slave_1);

byte_in = xqSpiTransferByte(byte_out);

xqSpiDisableSlave(pin_slave_1);

7-segments display driver

Usage

#include "XqD7.h"

XqD7 display1;

unsigned char selPin[] = {A1,A2,A3,A4};
xqD7Init(&d1, 6,7,8,9,10,11,12,13, selPin, 4);
xqD7Write(&display1, 0, '3');

Stepper motor driver

Usage

#include "XqStepMotor.h"

XqStepMotor m1;

xqStepMotorInit(&m1, 2,3,4,5);
xqStepMotorSetDir(&m1, -1);

/* go one step */
xqStepMotorStep();

1ms Timer driver

Usage

#include "XqTimer.h"

void on_timer(void* arg)
{
	/* run something every 100 us here */
}

xqTimerAddCb(on_timer, NULL);

xqTimerStart();

ADC driver

Usage

#include "XqAdc.h"

void A0_ready(unsigned int r)
{
	/* do anything with r */
}
xqAdcInit();
xqAdcAdd(A0, 1, A0_ready); 
xqAdcStart();

KeyBoard driver

Usage

#include "XqKb.h"

XqKb kb1;
unsigned char rowPins[] = {9,8,7,6};
unsigned char colPins[] = {5,4,3,2};
char keyMaps[] = {
	'1', '2', '3', 'A', 
	'4', '5', '6', 'B',
	'7', '8', '9', 'C',
	'*', '0', '#', 'D',
};

xqKbInit(&kb1, rowPins, colPins, 
		&keyMaps[0], 
		sizeof(rowPins)/sizeof(rowPins[0]),
		sizeof(colPins)/sizeof(colPins[0]));

...
char c = xqKbGetKey(&kb1);
...

GPIO driver

Usage

#include "XqGpio.h"

xqGpioSetMode(8, OUT);
xqGpioWrite(8, HIGH);

xqGpioSetMode(A0, IN);
unsigned char level = xqGpioRead(A0);

LCD driver

Usage

#include "XqLcd.h"	 

XqLCD lcd1;
xqLcdInit(&lcd1, 2, 16, 13, 12, 11, 7, 6, 5, 4);
xqLcdWriteMsg(&lcd1, "hello", 4);

Interrupt-based UART driver

How to use it for send data via UART?

#include "XqUart.h"

xqUartInit(9600);
xqUartSendMsg("Hello", 5);

How to use it for receive data via UART?

#include "XqUart.h"

void OnByteRecv(unsigned char c)
{
	/* do something */
}

xqUartInit(9600);
xqUartSetByteRecvCb(OnByteRecv);