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#include "s5pv210.h" #include "int.h" enum { IDLE, START, REQUEST, WAITING, RESPONSE, STOPING, } one_wire_status = IDLE; static volatile unsigned int io_bit_count; static volatile unsigned int io_data; static volatile unsigned char one_wire_request; #define SAMPLE_BPS 9600 #define SLOW_LOOP_FEQ 25 #define FAST_LOOP_FEQ 60 // 三类要求:触摸、型号、背光 #define REQ_TS 0x40U // 触摸要求 #define REQ_INFO 0x60U // 型号要求 static int ts_ready; static unsigned ts_status; static int resumed = 0; extern int gLCD_Type; static void set_pin_as_input(void) { unsigned tmp; tmp = GPH1CON; tmp &= ~(0XF << 8); GPH1CON = tmp; } static void set_pin_as_output(void) { unsigned tmp; tmp = GPH1CON; tmp = (tmp & ~(0XF << 8)) | (1 << 8); GPH1CON = tmp; } static void set_pin_value(int v) { unsigned tmp; tmp = GPH1DAT; if (v) { tmp |= (1 << 2); } else { tmp &= ~(1 << 2); } GPH1DAT = tmp; } static int get_pin_value(void) { int v; unsigned long tmp; tmp = GPH1DAT; v = !!(tmp & (1 << 2)); return v; } static int set_pin_up(void) { unsigned tmp; tmp = GPH1PUD; tmp = (tmp & ~(0x3 << 2*2)) | (0x2 << 2*2); GPH1PUD = tmp; } extern int gRow,gCol; #define RGB(r,g,b) (unsigned int)( (r << 16) + (g << 8) + b ) ////////////////////////////////////////////触摸/////////////////////////////////////////////// static void notify_ts_data(unsigned x, unsigned y, unsigned down) { //Uart_Printf("x = %d,y = %d down = %d\n",x,y,down); if(down) { Lcd_Printf(gRow/10*3+25*4, 0, RGB( 0xFF,0xFF,0xFF),RGB( 0x00,0x00,0x00),0,"Touch screen: ",x,y); Lcd_Printf(gRow/10*3+25*4, 0, RGB( 0xFF,0xFF,0xFF),RGB( 0x00,0x00,0x00),0,"Touch screen:%d %d\n",x,y); down = 0; } if (!down && !(ts_status &(1U << 31))) { // up repeat, give it up return; } ts_status = ((x << 16) | (y)) | (down << 31); ts_ready = 1; } int ts_read() { unsigned long err; // 当没有数据时，则等待 while(!ts_ready) ; return ts_status; } ////////////////////////////////////////////背光/////////////////////////////////////////////// static int bl_ready; static unsigned char backlight_req = 0; static unsigned char backlight_init_success; static void notify_bl_data(unsigned char a, unsigned char b, unsigned char c) { bl_ready = 1; backlight_init_success = 1; } static void bl_write(int brightness) { if (brightness> 127) { brightness= 127; } bl_ready = 0; backlight_req = brightness + 0x80U; } /////////////////////////////////////////////型号/////////////////////////////////////////////// static unsigned lcd_type, firmware_ver; static void notify_info_data(unsigned char _lcd_type, unsigned char ver_year, unsigned char week) { if (_lcd_type != 0xFF) { lcd_type = _lcd_type; gLCD_Type = lcd_type; firmware_ver = ver_year * 100 + week; } Uart_Printf("LCD type:%x\n",_lcd_type); } // CRC // static const unsigned char crc8_tab[] = { 0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, 0x2D, 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65, 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D, 0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD, 0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1, 0xB4, 0xB3, 0xBA, 0xBD, 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2, 0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA, 0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A, 0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A, 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42, 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A, 0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4, 0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4, 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C, 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44, 0x19, 0x1E, 0x17, 0x10, 0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34, 0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63, 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B, 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13, 0xAE, 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83, 0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, 0xF3, }; #define crc8_init(crc) ((crc) = 0XACU) #define crc8(crc, v) ( (crc) = crc8_tab[(crc) ^(v)]) // once a session complete static unsigned total_received, total_error; static unsigned last_req, last_res; static int cnt = 0; static void one_wire_session_complete(unsigned char req, unsigned int res) { unsigned char crc; const unsigned char *p = (const unsigned char*)&res; total_received ++; last_res = res; crc8_init(crc); crc8(crc, p[3]); crc8(crc, p[2]); crc8(crc, p[1]); if (crc != p[0]) { // 调试时可以打开，不会影响时序 //Uart_Printf("CRC dismatch\n"); if (total_received > 100) { total_error++; } return; } //Uart_Printf("CRC match\n"); switch(req) { // 触摸要求 case REQ_TS: { unsigned short x,y; unsigned pressed; x = ((p[3] >> 4U) << 8U) + p[2]; y = ((p[3] & 0xFU) << 8U) + p[1]; pressed = (x != 0xFFFU) && (y != 0xFFFU); // 上报触摸数据 // Uart_Printf("notify_ts_data\n"); notify_ts_data(x, y, pressed); break; } // 型号要求 case REQ_INFO: { // 上报信息数据 // Uart_Printf("notify_info_data\n"); notify_info_data(p[3], p[2], p[1]); break; } // 背光要求 default: { // 上报背光数据 // Uart_Printf("notify_bl_data\n"); notify_bl_data(p[3], p[2], p[1]); break; } } } // one-wire protocol core static unsigned long TCNT_FOR_SAMPLE_BIT; static unsigned long TCNT_FOR_FAST_LOOP; static unsigned long TCNT_FOR_SLOW_LOOP; // 初始化硬件定时器timer3 static void init_timer_for_1wire(void) { unsigned prescale1_value; // get prescaler prescale1_value = 1; // calc the TCNT_FOR_SAMPLE_BIT, that is one of the goal TCNT_FOR_SAMPLE_BIT = 66700000 / (prescale1_value + 1) / SAMPLE_BPS - 1; TCNT_FOR_FAST_LOOP = 66700000 / (prescale1_value + 1) / FAST_LOOP_FEQ - 1; TCNT_FOR_SLOW_LOOP = 66700000 / (prescale1_value + 1) / SLOW_LOOP_FEQ - 1; // select timer 3, the 2rd goal TCFG1 &= ~(15<<12); // Uart_Printf("TCNT_FOR_SAMPLE_BIT = %d\n",TCNT_FOR_SAMPLE_BIT); } static void stop_timer_for_1wire(void) { TCON &= ~(1<<16); } static void timer_for_1wire_interrupt() { // 清中断 TINT_CSTAT |= 0x100; // 清VIC intc_clearvectaddr(); io_bit_count--; switch(one_wire_status) { case START: if (io_bit_count == 0) { io_bit_count = 16; one_wire_status = REQUEST; } break; case REQUEST: // 16次，每次发1bit,把要求发出去(606a) set_pin_value(io_data & (1U << 31)); io_data <<= 1; if (io_bit_count == 0) { io_bit_count = 2; one_wire_status = WAITING; } break; case WAITING: // 2次 if (io_bit_count == 0) { io_bit_count = 32; one_wire_status = RESPONSE; } if (io_bit_count == 1) { set_pin_as_input(); set_pin_value(1); } break; case RESPONSE: // 32次， io_data = (io_data << 1) | get_pin_value(); if (io_bit_count == 0) { io_bit_count = 2; one_wire_status = STOPING; set_pin_value(1); set_pin_as_output(); // 通信完成，将要求和通信结果都传过去 one_wire_session_complete(one_wire_request, io_data); } break; case STOPING: if (io_bit_count == 0) { one_wire_status = IDLE; stop_timer_for_1wire(); } break; default: stop_timer_for_1wire(); } } static void start_one_wire_session(unsigned char req) { unsigned char crc; if (one_wire_status != IDLE) { return; } one_wire_status = START; set_pin_value(1); set_pin_as_output(); crc8_init(crc); crc8(crc, req); io_data = (req << 8) + crc; io_data <<= 16; // Uart_Printf("start_one_wire_session crc = %x req = %x\n", crc, req); // crc = 0x6a req = 0x60 io_data= 0x606a 0000 last_req = (io_data >> 16); // last_req = 0x606a one_wire_request = req; io_bit_count = 1; set_pin_as_output(); // 设置计数值 TCNTB3 = TCNT_FOR_SAMPLE_BIT; TCMPB3 = 0; // 启动timer3 TCON &= ~(0xF << 16); TCON |= (1<<16)|(1<<17)|(1<<19); TCON &= ~(1<<17); set_pin_value(0); } void One_Wire_Timer_Proc() { unsigned char req; // 还未识别LCD类型时，第一个要求是型号要求 if (lcd_type == 0) { req = REQ_INFO; } // 背光要求 else if (!backlight_init_success) { req = 127; } else if (backlight_req) { req = backlight_req; backlight_req = 0; } // 触摸要求 else { req = REQ_TS; } start_one_wire_session(req); } void TS_1wire_Init() { set_pin_as_output(); set_pin_value(1); set_pin_up(); // 初始化硬件定时器timer3 init_timer_for_1wire(); // 使能timer3的中断 pISR_TIMER3 = (unsigned long)timer_for_1wire_interrupt; intc_enable(NUM_TIMER3); TINT_CSTAT |= 0x108; // 开始一线处理 One_Wire_Timer_Proc(); } |
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