基于新唐NUC120RD2BN的EBI接口的ILI9327的驱动程序

缥缈九哥 本程序采用了新唐NUC120RD2BN带了EBI总线的CPU，因为ILI9327只有一个地址线RS，也就是命令，数据寄存器地址，而且又支持16位总线，所以把此地址线接到多余的ALE上，把ALE配置成GPIO模式，把ALE地址锁存的时序忽略掉，直接用EBI总线驱动ILI9327的数据总线。      其余不多说，请查看源码 9G-NUC120_gls-1028.rar (270.54 KB, 下载次数: 1694) 2013-12-23 16:50 上传 点击文件名下载附件 文件内容如下： * Includes ------------------------------------------------------------------*/ #include <stdio.h> #include <NUC1xx.H> #include "Driver\DrvSYS.h" #include "Driver\DrvGPIO.h" #include "Driver\DrvEBI.h" #define TFT_BL                E_GPA, 15   /* PA.15 = TFT_BL   */ #define TFT_RST               E_GPA, 9   /* PA.9  = TFT_RST  */ #define TFT_DC                E_GPB, 6   /* PB.6  = TFT_DC   */ #define ILI9327_READ()    (*(__IO uint16_t *)(0x60000000)) #define ILI9327_DAT(DAT)    *(__IO uint16_t *)(0x60000000) = DAT #define ILI9327_CMD(CMD)   {GPIOB->DOUT &= 0xffbf;*(__IO uint16_t *)(0x60000000) = CMD;GPIOB->DOUT |= 0x0040;} /* //make by yuanxihua@21cn.com //BYD LCM //BM240400-8790FTGB //262K TFT 240RGB×400dots // //ILI9327 is a 262,144-color single-chip SoC driver for a-TFT liquid crystal display //with resolution of 240RGBx432 dots, comprising a 720-channel source driver, a 432-channel //gate driver, 233,280 bytes GRAM for graphic data of 240RGBx432 dots, and power supply circuit. _________________________________________________ | NUC120RD2BN      ILI9327B | |            | | PA9  TFT_RST  ---->  RESET  | | PA15 TFT_BL  ---->  BACKLIGHT | | PB6  TFT_DC  ---->  RS   | | NCS  TFT_CS  ---->  CS   | | NWR  TFT_WR  ---->  WR   | | NRD  TFT_RD  ---->  RD   | | AD0  TFT_D0  <--->  DB0   | | ...  ...   <--->  ...   | | AD15 TFT_D15  <--->  DB15  | |_______________________________________________| */ uint16_t color_table[16]={0x0000,0xf800,0x07e0,0x001f,0xf81f,0xffe0,0x07ff,0xffff,}; void EBI_Init(void) { DRVEBI_CONFIG_T sEBIConfig; DRVEBI_TIMING_T sEBITiming; // Open EBI function sEBIConfig.eDataWidth  = E_DRVEBI_DATA_16BIT; sEBIConfig.eAddrWidth  = E_DRVEBI_ADDR_16BIT; sEBIConfig.u32BaseAddress  = DRVEBI_BASE_ADDR; sEBIConfig.u32Size    = DRVEBI_MAX_SIZE;   DrvEBI_Open(sEBIConfig); // Disable nWRH & nWRL for EBI support outpw(&SYS->GPBMFP, inpw(&SYS->GPBMFP) & ~(0x3<<2)); outpw(&SYS->ALTMFP, inpw(&SYS->ALTMFP) & ~(0x3<<13)); // Configure EBI timing // sEBITiming.eMCLKDIV = E_DRVEBI_MCLKDIV_1; // 1656.0 KHZ  //Display And Read ID ERROR!!! // sEBITiming.eMCLKDIV = E_DRVEBI_MCLKDIV_2; // 1147.0 KHZ  //Display OK, But Read ID ERROR!!! sEBITiming.eMCLKDIV = E_DRVEBI_MCLKDIV_4; //  666.7 KHZ  //Display OK, And Read ID OK!!! // sEBITiming.eMCLKDIV = E_DRVEBI_MCLKDIV_8; //  400.0 KHZ // sEBITiming.eMCLKDIV = E_DRVEBI_MCLKDIV_16; //  211.9 KHZ // sEBITiming.eMCLKDIV = E_DRVEBI_MCLKDIV_32; //  106.4 KHZ   sEBITiming.u8ExttALE = 0; sEBITiming.u8ExtIR2R = 0; sEBITiming.u8ExtIW2X = 0; sEBITiming.u8ExttAHD = 0; sEBITiming.u8ExttACC = 0; DrvEBI_SetBusTiming(sEBITiming); } void ILI9327_READ_ID(void) { uint16_t i; ILI9327_CMD(0xEF);    //Device Code Read printf("ILI9327 ID DATA: "); for(i=1;i<=6;i++){printf("%04x ",(uint16_t)ILI9327_READ());} printf("\n\r\n\r"); } void ILI9327_RESET(void) { //PA9 PA15 PB6 is defined as GPIO; outpw(&SYS->GPAMFP, inpw(&SYS->GPAMFP) & ~(0x1<< 9)); outpw(&SYS->GPAMFP, inpw(&SYS->GPAMFP) & ~(0x1<<15)); outpw(&SYS->GPBMFP, inpw(&SYS->GPBMFP) & ~(0x1<< 6)); //TFT_RST TFT_DC TFT_BL is defined as Output; DrvGPIO_Open(TFT_RST, E_IO_OUTPUT); DrvGPIO_Open(TFT_DC , E_IO_OUTPUT); DrvGPIO_Open(TFT_BL , E_IO_OUTPUT); DrvGPIO_SetBit(TFT_DC ); DrvGPIO_ClrBit(TFT_BL ); DrvGPIO_SetBit(TFT_RST); DrvSYS_Delay(1000); DrvGPIO_ClrBit(TFT_RST);   // RESET LOW  >=   1 ms DrvSYS_Delay(2000);   DrvGPIO_SetBit(TFT_RST);   // RESET HIGH >= 120 ms DrvSYS_Delay(200000); } void ILI9327_CLEAR(uint16_t color) {     uint16_t i,j; for(i=0;i<240;i++) {   for (j=0;j<400;j++) {ILI9327_DAT(color);} } } void Delay_1ms(int delay) { uint32_t i; for(i=0;i<delay;i++)DrvSYS_Delay(1000); } void ILI9327_TEST(void) { uint16_t i,color; printf("%s(%d): Running:  %s()\n\r",__FILE__,__LINE__,__FUNCTION__); while(1) {   color = color_table[(i++)%8];   printf("COLOR = 0x%04x \n\r",color);   ILI9327_CLEAR(color);   Delay_1ms(2000);   // 2s } } void ILI9327_Init(void) {   printf("*** ILI9327 Driver V1.00 Build by yuanxihua@21cn.com on ("__DATE__ " - " __TIME__ ")\n\r\n\r"); EBI_Init(); ILI9327_RESET(); ILI9327_READ_ID();     ILI9327_CMD(0xE9);  //     ILI9327_DAT(0x20);     ILI9327_CMD(0x11);   //exit_sleep_mode     DrvSYS_Delay(100000); //100 ms     ILI9327_CMD(0xD1);   //VCOM Control     ILI9327_DAT(0x00);     ILI9327_DAT(0x6b);     ILI9327_DAT(0x18);     ILI9327_CMD(0xD0);   //Power_Setting     ILI9327_DAT(0x07);     ILI9327_DAT(0x04);     ILI9327_DAT(0x88);     ILI9327_CMD(0x36);  //set_address_mode     ILI9327_DAT(0x88);     ILI9327_CMD(0xC1);  //Display_Timing_Setting for Normal/Partial Mode     ILI9327_DAT(0x10);     ILI9327_DAT(0x10);     ILI9327_DAT(0x02);     ILI9327_DAT(0x02);     ILI9327_CMD(0xC0);   //Panel Driving Setting     ILI9327_DAT(0x00);     ILI9327_DAT(0x35);     ILI9327_DAT(0x00);     ILI9327_DAT(0x00);     ILI9327_DAT(0x01);     ILI9327_DAT(0x02);     ILI9327_CMD(0xC5);   //Frame Rate Control     ILI9327_DAT(0x02);     ILI9327_CMD(0xD2);   //Power_Setting for Normal Mode     ILI9327_DAT(0x01);     ILI9327_DAT(0x44);     ILI9327_CMD(0xC8);  //Gamma Setting     ILI9327_DAT(0x00);     ILI9327_DAT(0x56);     ILI9327_DAT(0x45);     ILI9327_DAT(0x04);     ILI9327_DAT(0x03);     ILI9327_DAT(0x01);     ILI9327_DAT(0x23);     ILI9327_DAT(0x12);     ILI9327_DAT(0x77);     ILI9327_DAT(0x40);     ILI9327_DAT(0x09);     ILI9327_DAT(0x06);     ILI9327_DAT(0x88);     ILI9327_DAT(0x88);     ILI9327_DAT(0x88);     ILI9327_CMD(0x3A);   //set_pixel_format ILI9327_DAT(0x55);    ILI9327_CMD(0x2A);  //set_column_address ILI9327_DAT(0x00); ILI9327_DAT(0x00); ILI9327_DAT(0x00); ILI9327_DAT(0xEF); ILI9327_CMD(0x2B);  //set_page_address ILI9327_DAT(0x00); ILI9327_DAT(0x20); ILI9327_DAT(0x01); ILI9327_DAT(0xAF); ILI9327_CMD(0x29);   //set_display_on ILI9327_CMD(0x2C);  //write_memory_start DrvGPIO_SetBit(TFT_BL ); ILI9327_TEST(); } void ILI9327_SLEEP(void) { ILI9327_CMD(0x10);  //enter_sleep_mode } void ILI9327_WAKEUP(void) { ILI9327_CMD(0x11);  //exit_sleep_mode } 文件结束。

ALE     为什么要设置成普通的 IO 啊，我的理解是 ALE 的时间 不是可以区分    数据 和指令的嘛，请求解答，我正想用 EBI 驱动 LCD