M48XTouchPanel.c

00001 #if 0   // moved to the related target folders
00002 #include "M480.h"
00003 
00004 //#include "stdlib.h"
00005 #include "GUI.h"
00006 //#include "W55FA93_adc.h"
00007 #include "M48XTouchPanel.h"
00008 //#include "lcdconf.h"
00009 
00010 
00011 
00012 int Init_TouchPanel(void)
00013 {
00014     /* Enable peripheral clock */
00015     CLK_EnableModuleClock(EADC_MODULE);
00016 
00017     /* Peripheral clock source */
00018     CLK_SetModuleClock(EADC_MODULE, 0, CLK_CLKDIV0_EADC(8));
00019 
00020     /* Init ADC for TP */
00021     /* Set input mode as single-end and enable the A/D converter */
00022     EADC_Open(EADC, EADC_CTL_DIFFEN_SINGLE_END);
00023 
00024     return 1;
00025 }
00026 
00027 static volatile    uint32_t    g_u32AdcIntFlag_TP;
00028 
00029 /*-----------------------------------------------*/
00030 // ADC01 ISR
00031 //
00032 /*-----------------------------------------------*/
00033 void ADC01_IRQHandler(void)
00034 {
00035     /* Clear the A/D ADINT1 interrupt flag */
00036     EADC_CLR_INT_FLAG(EADC, EADC_STATUS2_ADIF1_Msk);
00037 
00038     g_u32AdcIntFlag_TP = 1;
00039 
00040 }
00041 
00042 /*-----------------------------------------------*/
00043 // Get X Position from Touch Panel (ADC input)
00044 //
00045 /*-----------------------------------------------*/
00046 uint16_t Get_TP_X(void)
00047 {
00048     uint16_t    x_adc_in;
00049 
00050     /*=== Get X from ADC input ===*/
00051     GPIO_SetMode(PB, BIT9, GPIO_MODE_OUTPUT);   // XR
00052     GPIO_SetMode(PH, BIT5, GPIO_MODE_INPUT);    // YD
00053     GPIO_SetMode(PH, BIT4, GPIO_MODE_OUTPUT);   // XL
00054     PB9 = 1;
00055     PH4 = 0;
00056 
00057     /* Configure the GPB8 ADC analog input pins.  */
00058     SYS->GPB_MFPH &= ~(SYS_GPB_MFPH_PB8MFP_Msk | SYS_GPB_MFPH_PB9MFP_Msk);
00059     SYS->GPB_MFPH |= SYS_GPB_MFPH_PB8MFP_EADC0_CH8;
00060 
00061     /* Disable the GPB8 digital input path to avoid the leakage current. */
00062     GPIO_DISABLE_DIGITAL_PATH(PB, BIT8);
00063 
00064     /* Configure the sample module 1 for analog input channel 8 and software trigger source.*/
00065     EADC_ConfigSampleModule(EADC, 1, EADC_SOFTWARE_TRIGGER, 8); // YU
00066 
00067     /* Clear the A/D ADINT1 interrupt flag for safe */
00068     EADC_CLR_INT_FLAG(EADC, EADC_STATUS2_ADIF1_Msk);
00069 
00070     /* Enable the sample module 1 interrupt.  */
00071     EADC_ENABLE_INT(EADC, BIT1);    //Enable sample module A/D ADINT1 interrupt.
00072     EADC_ENABLE_SAMPLE_MODULE_INT(EADC, 1, BIT1);    //Enable sample module 1 interrupt.
00073     NVIC_EnableIRQ(43); //for ADC1_IRQn and EADC01_IRQn
00074 
00075     /* Reset the ADC interrupt indicator and trigger sample module 1 to start A/D conversion */
00076     g_u32AdcIntFlag_TP = 0;
00077     EADC_START_CONV(EADC, BIT1);
00078 
00079     /* Wait ADC interrupt (g_u32AdcIntFlag_TP will be set at IRQ_Handler function) */
00080     //while(g_u32AdcIntFlag_TP == 0);
00081     EADC_CLR_INT_FLAG(EADC, EADC_STATUS2_ADIF1_Msk);
00082     g_u32AdcIntFlag_TP = 1;
00083     x_adc_in = EADC_GET_CONV_DATA(EADC, 1);
00084     return x_adc_in;
00085 
00086 }
00087 
00088 
00089 /*-----------------------------------------------*/
00090 // Get Y Position from Touch Panel (ADC input)
00091 //
00092 /*-----------------------------------------------*/
00093 uint16_t Get_TP_Y(void)
00094 {
00095     uint16_t    y_adc_in;
00096 
00097     /*=== Get Y from ADC input ===*/
00098     GPIO_SetMode(PB, BIT8, GPIO_MODE_OUTPUT);   // YU
00099     GPIO_SetMode(PH, BIT5, GPIO_MODE_OUTPUT);   // YD
00100     GPIO_SetMode(PH, BIT4, GPIO_MODE_INPUT);    // XL
00101     PB8 = 1;
00102     PH5 = 0;
00103 
00104     /* Configure the GPB9 ADC analog input pins.  */
00105     SYS->GPB_MFPH &= ~(SYS_GPB_MFPH_PB8MFP_Msk | SYS_GPB_MFPH_PB9MFP_Msk);
00106     SYS->GPB_MFPH |= SYS_GPB_MFPH_PB9MFP_EADC0_CH9;
00107 
00108     /* Disable the GPB9 digital input path to avoid the leakage current. */
00109     GPIO_DISABLE_DIGITAL_PATH(PB, BIT9);
00110 
00111     /* Configure the sample module 2 for analog input channel 9 and software trigger source.*/
00112     EADC_ConfigSampleModule(EADC, 2, EADC_SOFTWARE_TRIGGER, 9); // XR
00113 
00114     /* Clear the A/D ADINT1 interrupt flag for safe */
00115     EADC_CLR_INT_FLAG(EADC, EADC_STATUS2_ADIF1_Msk);
00116 
00117     /* Enable the sample module 2 interrupt.  */
00118     EADC_ENABLE_INT(EADC, BIT2);    //Enable sample module A/D ADINT1 interrupt.
00119     EADC_ENABLE_SAMPLE_MODULE_INT(EADC, 1, BIT2);    //Enable sample module 2 interrupt.
00120     NVIC_EnableIRQ(43); //for ADC1_IRQn and EADC01_IRQn)
00121 
00122     /* Reset the ADC interrupt indicator and trigger sample module 2 to start A/D conversion */
00123     g_u32AdcIntFlag_TP = 0;
00124     EADC_START_CONV(EADC, BIT2);
00125 
00126     /* Wait ADC interrupt (g_u32AdcIntFlag_TP will be set at IRQ_Handler function) */
00127     //while(g_u32AdcIntFlag_TP == 0);
00128     EADC_CLR_INT_FLAG(EADC, EADC_STATUS2_ADIF1_Msk);
00129     g_u32AdcIntFlag_TP = 1;
00130     y_adc_in = EADC_GET_CONV_DATA(EADC, 2);
00131     return y_adc_in;
00132 
00133 }
00134 
00135 int Read_TouchPanel(int *x, int *y)
00136 {
00137     *x = Get_TP_X();
00138     *y = Get_TP_Y();
00139     if ( (*x == 0xFFF) || (*y == 0xFFF) )
00140         return 0;
00141     else
00142         return 1;
00143 }
00144 
00145 int Uninit_TouchPanel(void)
00146 {
00147     return 1;
00148 }
00149 
00150 int Check_TouchPanel(void)
00151 {
00152     return 0;   //Pen up;
00153 }
00154 #endif