MTK手机设备驱动编写介绍.ppt

首先需要注意两个宏定义 1. _CUST_NEW_ 程序中有多处用该宏将代码隔开 Make文件中若如下定义： DRV_CUSTOM_TOOL_SUPPORT = TRUE Option.mak文件中 ifdef DRV_CUSTOM_TOOL_SUPPORT ifeq ($(strip $(DRV_CUSTOM_TOOL_SUPPORT),TRUE) COM_DEFS += _CUST_NEW_ endif endif 2. WIN32 #ifndef WIN32 #endif 用该宏将真机与模拟器的代码分隔开 GPIO口的初始化 方法：两种： 1.工具 customdrvDrv_ToolDrvGen.exe 修改： customdrvmisc_drvIWIT23_NEP_07A_PMJ_BBcodegencodege n.dws 2.程序中修改：Gpio_drv.c void GPIO_init(void) 操作 1. 写状态 a. 模式修改 GPIO_ModeSetup(kal_uint16 pin, kal_uint16 conf_dada) b. 方向修改 void GPIO_InitIO(char direction, char port) c. 置高与置低 GPIO_WriteIO(char data, char port) d. 上拉与下拉的使能 void GPIO_PullenSetup(kal_uint16 pin, kal_bool enable) 2. 读取状态 a. 返回模式 char GPIO_ReturnMode(char port); b. 返回方向 char GPIO_ReturnDir(char port); c. 返回电平值 char GPIO_ReturnDout(char port); 3. GPIO使用中需注意的问题 . 中断个数 8个 EINT0, EINT1为专用中断, EINT2-7 与GPIO等功能复用 . 设置中断模式 通过DRV_TOOL或Gpio_init(void)来初始化，也可在程序中通过 GPIO_ModeSetup(kal_uint16 pin, kal_uint16 conf_dada)随时修改 . 中断注册函数 在某个TASK中注册中断，建议注册在AUX_TASK中，便于管理 EINT_Registration(FLICK_EINT_NO, KAL_TRUE, flick_state, FLICK_EINT_HISR, KAL_TRUE); . 中断处理函数 以FLICK及BATTERY两个中断为例： void FLICK_EINT_HISR(void) /added by Jeff Ji 071024 ilm_struct *flick_ilm; aux_id_struct *aux_id_data; if (flick_state = LEVEL_HIGH) aux_id_data = (aux_id_struct*) construct_local_para(sizeof(aux_id_struct), TD_CTRL); aux_id_data-aux_id = AUX_ID_FLICK_OFF; DRV_BuildPrimitive(flick_ilm, MOD_EINT_HISR, MOD_UEM, MSG_ID_AUX_ID, aux_id_data); else aux_id_data = (aux_id_struct*) construct_local_para(sizeof(aux_id_struct), TD_CTRL); aux_id_data-aux_id = AUX_ID_FLICK_ON; DRV_BuildPrimitive(flick_ilm, MOD_EINT_HISR, MOD_UEM, MSG_ID_AUX_ID, aux_id_data); msg_send_ext_queue(flick_ilm); flick_state = !flick_state; EINT_Set_Polarity(FLICK_EINT_NO,flick_state); void BATTERY_EINT_HISR(void) iwit_battery_state = !iwit_battery_state; EINT_Set_Polarity(BAT_EINT_NO,iwit_battery_state); iwit_fakeChargerAct = KAL_TRUE; if(iwit_battery_state = LEVEL_HIGH)/plug out bmt_set_chr_status(bmt_chr_out); bmt_charger_action(KAL_FALSE); else /plug in if(iwit_charger_present) bmt_set_chr_status(bmt_chr_in); bmt_charger_action(KAL_TRUE); 5X6键盘 Powerkey单独，第6列 DEVICE_KEY_END Keypad_def.c 配置行列矩阵 Kbd_table.h 定义 DRIVER KEY CODE KeyBrd.c 定义KeyPadMap GlobalConstants.h 定义MMI KEY CODE 四. LCD驱动 Lcd_sw.h 1. 定义写命令及写数据的函数 #define LCD_CtrlWrite_HX8306A(_data) *(volatile kal_uint32 *) LCD_HX8306A_CTRL_ADDR= (_data void LCD_Init_ST7549T(kal_uint32 bkground, void *buf_addr) void LCD_BlockWrite_ST7549T(kal_uint16 startx,kal_uint16 starty,kal_uint16 endx,kal_uint16 endy) void LCD_EnterSleep_ST7549T(void) void LCD_ExitSleep_ST7549T(void) void LCD_SetContrast_ST7549T(kal_uint8 level) 串口屏 void init_lcd_interface(void) SPI_Initialize();/modified by jeff ji 071024 /* init_lcd_interface() * void lcdSendSerialData(kal_uint8 SerialData, kal_bool rs) #define lcdSendCmd(cmd) lcdSendSerialData(cmd, 0) #define lcdSendData(data) lcdSendSerialData(data,1) 并口屏： void init_lcd_interface(void) kal_uint32 i; REG_LCD_ROI_CTRL=0; CLEAR_LCD_CTRL_RESET_PIN; #if (defined(MT6219)|defined(MT6226)|defined(MT6226M)|d efined(MT6227)|defined(MT6223)| defined(MT6223P) SET_LCD_PARALLEL_CE2WR_SETUP_TIME(kal_uint32)2); SET_LCD_PARALLEL_CE2WR_HOLD_TIME(2); SET_LCD_PARALLEL_CE2RD_SETUP_TIME(2); SET_LCD_PARALLEL_WRITE_WAIT_STATE(3); SET_LCD_PARALLEL_READ_LATENCY_TIME(31); SET_LCD_ROI_CTRL_CMD_LATENCY(3 #if (defined(MT6226)|defined(MT6226M)|defined(MT6227)|defined(MT6 223)| defined(MT6223P) #if (defined(LCD_16BIT_MODE) SET_LCD_PARALLEL_16BIT_DATA_BUS;/ywm+ 20060518 #elif (defined(LCD_18BIT_MODE) GPIO_ModeSetup(55, 1); *(volatile unsigned short *) 0x801201B0) |= 0x4000; *(volatile unsigned short *) 0x801201D0) |= 0x0001; SET_LCD_PARALLEL_18BIT_DATA_BUS; #elif (defined(LCD_8BIT_MODE) SET_LCD_PARALLEL_8BIT_DATA_BUS; #endif #endif #if (defined(MT6219) DISABLE_LCD_PARALLEL_SYNC; #endif #endif SET_LCD_CTRL_RESET_PIN; Delayms(100); /* init_lcd_interface() */ 1.Speaker 2.Receiver 3.Micphone 模式：normal ; handfree ; headset Nvram_default_audio.c 值的范围 0 - 255 Audcoeff.c FIR 需使用音频测试仪器测出的参数，一般都是normal模式下的参数; handfree模式下的参数要依靠经验和尝试来确定。 const unsigned short DG_DL_Speech = 0x1000; const unsigned short DG_Microphone = 0x1400; 以上两个变量为Receiver及Microphone的数字增益，值可以在0x1000 至0x2000之间调整，但一般情况下不需调整。使用默认值，而只调 整Nvram_default_audio.c当中的模拟增益值的大小即可 audcoeff_default.h #define DEFAULT_SPEECH_LOUDSPK_MODE_PARA 128, 224, 5128, 0, 374, 0, 400, 0 第一个参数范围值0至1024 , 值越大，回声抑制越弱 ; 值越 小，回声抑制越强。该值可以用于改善音频的回声及断续。 其它值不建议修改. _Apply_Mic_Setting对MIC的设置，注意MIC的单端及差分设置 void _apply_mic_setting_c63216(kal_int16 a_lowest) if( afe.mic_src=L1SP_LNA_1 ) /* Headset Mode */ *AFE_VAC_CON0 |= 0x0480; /* Switch input source to headset microphone */ *AFE_VAC_CON1 |= 0x0040; /* Switch on resister string */ else /* Normal Mode */ *AFE_VAC_CON0 /* Switch input source to normal microphone */ *AFE_VAC_CON1 /* Switch off resister string */ 1. 工具配置 2. 系数设置 Chr_parameter.c const kal_uint16 adc_volt_factorADC_MAX_CHANNEL 100, 100, 50, 250, 50, 50,/*NC*/ 50 /*NC*/ , 50为一倍 3. ADC测量 Auxmain.c 七. Touch panel 1.MAKE文件中如下配置 TOUCH_PANEL_SUPPORT = MT6301 2. Touch_panel_spi.h #define SPI_DIN_PIN gpio_tp_spi_din_pin /*GPO*/ #define SPI_CLK_PIN gpio_tp_spi_clk_pin /*GPO*/ #define SPI_DOUT_PIN gpio_tp_spi_dout_pin /*GPI*/ #define SPI_CS_PIN gpio_tp_spi_cs_pin /*GPO*/ #define SPI_BUSY_PIN gpio_tp_spi_busy_pin /*GPI*/ 3. Touch_panel_custom.h #define TOUCH_PANEL_COORD_X_START 0 #define TOUCH_PANEL_COORD_X_END 239 #define TOUCH_PANEL_COORD_Y_START 0 #define TOUCH_PANEL_COORD_Y_END 319 八. USB 1. MAKE文件中 _CHARGER_USB_DETECT_WIHT_ONE_EINT_ _USB_ENABLE_ USB_IN_NORMAL_MODE_SUPPORT = TRUE 2. ADC配置，工具配置 ADC_CHR_USB 3. Chr_parameter.c const kal_uint16 adc_volt_factorADC_MAX_CHANNEL 100, 100, 50, 250, 50, 50,/*NC*/ 50 /*NC*/ , 九. UART 串口初始化 Uart.c中，void UART_HWInit(UART_PORT port) UARTDCBStruct UART_DefaultConfig = UART_BAUD_115200, /* baud; */ len_8, /* dataBits; */ sb_1, /*stopBits; */ pa_none, /* parity; */ fc_none, /*no flow control*/ 0x11, /* xonChar; */ 0x13, /* xoffChar; */ KAL_FALSE ; 关于AT模式串口及Trace模式串口的设置（NVRAM) Nvram_common_config.c static kal_uint8 const NVRAM_EF_PORT_SETTING_DEFAULT = #if defined(_ONLY_ONE_UART_) 0x63, 0x00, /* TST uses uart_port2(value is 1) */ 0x00, 0x00, /* APP uses uart_port1 */ #else 0x01, 0x00, /* TST uses uart_port2(value is 1) */ 0x00, 0x00, /* APP uses uart_port1 */ #endif #if defined(EMPTY_MMI) 0x00, 0x10, 0x0E, 0x00, /* tst default baud rate base = 921600 = 0x000E1000 */ #else 0x00, 0xC2, 0x01, 0x00, /* tst default baud rate base = 115200 = 0x0001C200 */ #endif #if defined (_GPRS_MODE_) 0x00, 0xC2, 0x01, 0x00, /* ps default baud rate base = 115200 = 0x0001C200 */ #else 0x00, 0xC2, 0x01,0x00, /* ps default baud rate base = 57600 = 0x0000E100 */ #endif 0x00, /* High SpeedSIM */ 0x00, /* SWDBG */ 0x03, 0x63, /* uart power setting, plus 1