WhyCan Forum(哇酷开发者社区)

touch.h

/************************************************ 
  name    : touch.h
  desc    :
  author  : HuangXinfeng
	date    : 2018.09.07
 ************************************************/

#ifndef __TOUCH_H__
#define __TOUCH_H__

#ifdef __cplusplus
extern "C" {
#endif
#define TP_BASE_ADDR					0x01c24800
	
#define TP_CTRL0		0x00
#define TP_CTRL1		0x04
#define TP_CTRL2		0x08
#define TP_CTRL3		0x0c
#define TP_INT_FIFOC		0x10
#define TP_INT_FIFOS		0x14
#define TP_TPR			0x18
#define TP_CDAT			0x1c
#define TEMP_DATA		0x20
#define TP_DATA			0x24

/* TP_CTRL0 bits */
#define ADC_FIRST_DLY(x)	((x) << 24) /* 8 bits */
#define ADC_FIRST_DLY_MODE(x)	((x) << 23)
#define ADC_CLK_SEL(x)		((x) << 22)
#define ADC_CLK_DIV(x)		((x) << 20) /* 3 bits */
#define FS_DIV(x)		((x) << 16) /* 4 bits */
#define T_ACQ(x)		((x) << 0) /* 16 bits */

/* TP_CTRL1 bits */
#define STYLUS_UP_DEBOUN(x)	((x) << 12) /* 8 bits */
#define STYLUS_UP_DEBOUN_EN(x)	((x) << 9)
#define TOUCH_PAN_CALI_EN(x)	((x) << 6)
#define TP_DUAL_EN(x)		((x) << 5)
#define TP_MODE_EN(x)		((x) << 4)
#define TP_ADC_SELECT(x)	((x) << 3)
#define ADC_CHAN_SELECT(x)	((x) << 0)  /* 3 bits */

/* on sun6i, bits 3~6 are left shifted by 1 to 4~7 */
#define SUN6I_TP_MODE_EN(x)	((x) << 5)

/* TP_CTRL2 bits */
#define TP_SENSITIVE_ADJUST(x)	((x) << 28) /* 4 bits */
#define TP_MODE_SELECT(x)	((x) << 26) /* 2 bits */
#define PRE_MEA_EN(x)		((x) << 24)
#define PRE_MEA_THRE_CNT(x)	((x) << 0) /* 24 bits */

/* TP_CTRL3 bits */
#define FILTER_EN(x)		((x) << 2)
#define FILTER_TYPE(x)		((x) << 0)  /* 2 bits */

/* TP_INT_FIFOC irq and fifo mask / control bits */
#define TEMP_IRQ_EN(x)		((x) << 18)
#define OVERRUN_IRQ_EN(x)	((x) << 17)
#define DATA_IRQ_EN(x)		((x) << 16)
#define TP_DATA_XY_CHANGE(x)	((x) << 13)
#define FIFO_TRIG(x)		((x) << 8)  /* 5 bits */
#define DATA_DRQ_EN(x)		((x) << 7)
#define FIFO_FLUSH(x)		((x) << 4)
#define TP_UP_IRQ_EN(x)		((x) << 1)
#define TP_DOWN_IRQ_EN(x)	((x) << 0)

/* TP_INT_FIFOS irq and fifo status bits */
#define TEMP_DATA_PENDING	BIT(18)
#define FIFO_OVERRUN_PENDING	BIT(17)
#define FIFO_DATA_PENDING	BIT(16)
#define TP_IDLE_FLG		BIT(2)
#define TP_UP_PENDING		BIT(1)
#define TP_DOWN_PENDING		BIT(0)

	/* TP_TPR bits */
#define TEMP_ENABLE(x)		((x) << 16)
#define TEMP_PERIOD(x)		((x) << 0)  /* t = x * 256 * 16 / clkin */

#ifdef __cplusplus
}
#endif

#endif

touch.c

/************************************************ 
  name    : touch.h
  desc    :
  author  : HuangXinfeng
	date    : 2018.09.08
 ************************************************/
#include "touch.h"
#include "io.h"

struct IntTypeStu
{
	u32_t INTC_VECTOR_REG;
	u32_t INTC_BASE_ADDR_REG;
	u32_t INTC_CTRL_REG;
	u32_t INTC_PEND_REG0;
	u32_t INTC_PEND_REG1;
	
	u32_t INTC_EN_REG0;
	u32_t INTC_EN_REG1;
};

void TouchInit()
{
	u32_t addr;
	u32_t val;

	/* 配置 GPIOA0 为  TPX1 TPY1 TP X2 TPY2*/
	addr = 0x01c20800 + 0x00;
	val = read32(addr);
	val &= ~(0x0000ffff);	//低14位清0
	val |= 0x22222222;		//010 TP模式即每位都是2
	write32(addr, val);
	
	val = read32(TP_BASE_ADDR+TP_CTRL0);
	/*24M / 6 = 4Mhz(CLK_IN)/ 2^13(8192) = 488.28125 hz*/
	/*Conversion Time = 1 / (4MHz/13Cycles) = 3.25us*/
	/*触摸ADC获取时间T_ACQ  = CLK_IN /(16*(1+63)) = 3906.25hz 左右*/
	write32(TP_BASE_ADDR+TP_CTRL0, (0x1f << 23)|ADC_CLK_SEL(0) | ADC_CLK_DIV(2) | FS_DIV(7) | T_ACQ(63));
	
	/*00: FIFO store X1,Y1 data for single touch no pressure mode*/
	val = read32(TP_BASE_ADDR+TP_CTRL2);
	val = (0x08 << 28) | TP_MODE_SELECT(0) | (0 << 24)|0xFFF;
	write32(TP_BASE_ADDR+TP_CTRL2,	val);
	
	val = read32(TP_BASE_ADDR+TP_CTRL3);//使能滤波器
	write32(TP_BASE_ADDR + TP_CTRL3, FILTER_EN(1) | val);
	
	write32(TP_BASE_ADDR + TP_TPR, TEMP_ENABLE(1) | TEMP_PERIOD(1953));//温度转换寄存器
	
	val = read32(TP_BASE_ADDR+TP_CTRL1);
	val = (5<<12) | (1<< 9) | (0<<8) | (1 << 5) | TP_MODE_EN(0) | 0x00;	//4通道使能
	write32( TP_BASE_ADDR + TP_CTRL1, val);
	
	write32( TP_BASE_ADDR + TP_CDAT, 0xc00);
	write32( TP_BASE_ADDR + 0x38, 0x22);
	
	write32(TP_BASE_ADDR + TP_INT_FIFOC , TEMP_IRQ_EN(1) | OVERRUN_IRQ_EN(0) | DATA_IRQ_EN(1) | FIFO_TRIG(0x02) | TP_DATA_XY_CHANGE(0)| FIFO_FLUSH(1) | TP_UP_IRQ_EN(1) | TP_DOWN_IRQ_EN(1));
//	write32(TP_BASE_ADDR + TP_INT_FIFOC, 0x00);
	addr = 0x01c20400 + 0x20; //INT Enable register0
	val = read32(addr);
	val |= (1 << 20);
	write32(addr, val);
	
	val = read32(0x01c20400 + 0x30);
	val &= ~(1 << 20);	//释放屏蔽位
	write32(0x01c20400 + 0x30, val);
}

main.c

extern int touchx,touchy,temperature;
__irq void HandleIRQ()
{
	u32_t x, y;
	u32_t val;
	
	if(read32(INTC_PEND_REG0) & (1 << 13))//定时器0中断
	{
		SystickMs();
		write32(TIMER_BASS_ADDR+TMR_IRQ_STA_REG, 0x01);//清除中断
	}
	else if(read32(INTC_PEND_REG0) & (1 << 20))//触摸屏中断
	{
		val = read32(0x01C24800 + 0x14);
		if (val & (1 << 16))//fifo data irq
		{
			if (((val<<17) >> 8) > 5) 
			{
				touchx = x = read32(TP_BASE_ADDR+TP_DATA);
				touchy = y = read32(TP_BASE_ADDR+TP_DATA);
				x = 1;
			}
		}
		
		if (val & (1 << 18))//温度传感器中断
		{
				temperature = read32(TP_BASE_ADDR+0x20);
		}
		
		if (val & (1 << 0))//按下中断
		{
			x = 1;
		}
		
		if (val & (1 << 1))//抬起中断
		{
			y = 1;
		}
		
		write32(TP_BASE_ADDR+TP_INT_FIFOS, val);
//		write32(TP_BASE_ADDR + TP_INT_FIFOC , read32(0x01C24800 + 0x14) | FIFO_FLUSH(1));
//		write32(TP_BASE_ADDR+TP_INT_FIFOS, read32(0x01C24800 + 0x14) | (0x01) | (1 << 17));
//		write32(0x01c20400+ 0x10 , (1 << 20) );
		
	}
}




int main(void)
{
	......
	*((void * volatile *)0x00000038) = (void *volatile)HandleIRQ;//IRQ地址
	......
}

Pese 说：

达克罗德 说：

framebuffer都有了，画点就是把rgba写到对应行列的那个32位数

这样？下载麻烦未测试
void point(x,y,color){
((uint32_t *)render->pixels)[x+800*y] = color;
  fb_f1c100s_present(&fb_f1c100s, render);
}
不过裸机真的麻烦，使用了标准库，makefile加-lc -lm -lnosys编译，就报错，外设驱动又不全，玩不来啊
In function `_sbrk':
sbrk.c:(.text._sbrk+0x28): undefined reference to `end'
collect2.exe: error: ld returned 1 exit status
噢gcc是gcc version 7.3.1 20180622 (release) [ARM/embedded-7-branch revision 261907] (GNU Tools for Arm Embedded Processors 7-2018-q2-update)

present是把全屏都更新。你不要每画一个点都更新全屏，而是全部画完才调present