[1204] | 1 | /*! \file warp_userioboard_util.c |
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| 2 | \brief Provides high-level functions for using the various interfaces on the WARP User I/O Board. This file and its header file should be included in your EDK software project to help drive the User I/O board. The low-level register access functions used here are provided by the User I/O Board controller's driver. |
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| 3 | */ |
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| 4 | |
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| 5 | #include "warp_userioboard_util.h" |
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| 6 | #include "ascii_characters.h" |
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| 7 | #include "xparameters.h" |
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| 8 | |
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| 9 | //Only include SystemACE CF and xil_fatfs headers if the xps_sysace hardware and xil_fatfs library is included in the project |
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| 10 | #ifdef XPAR_SYSACE_0_DEVICE_ID |
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| 11 | #ifdef XILFATFS_MAXFILES |
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| 12 | #include "xsysace.h" |
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| 13 | #include "sysace_stdio.h" |
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| 14 | #endif |
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| 15 | #endif |
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| 16 | |
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| 17 | ///@brief Initializes the LCD screen |
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| 18 | /// |
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| 19 | ///@param slotNumber Integer in [1,2,3,4] indicating which daughtercard slot holds the User I/O Board |
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| 20 | ///@param invertColors Selects standard or inverse color map; use 0 by default |
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| 21 | void warp_userioboard_lcd_init(unsigned char slotNumber, unsigned char invertColors) |
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| 22 | { |
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| 23 | //Reset the LCD via its dedicated digital reset pin, mapped through the controller |
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| 24 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESETLCD, 1); |
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| 25 | usleep(10); |
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| 26 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESETLCD, 0); |
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| 27 | usleep(10); |
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| 28 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESETLCD, 1); |
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| 29 | |
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| 30 | //Write the default values to every register, as specified in the From Register masks in Sysgen |
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| 31 | // (these defaults aren't honored in hardware, so we write them here) |
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| 32 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_BACKGROUNDCOLOR, 0); |
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| 33 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_CHARACTERSSELECT, 0); |
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| 34 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_COLSET, 0x175); |
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| 35 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_CONFIGLOCATION, 0); |
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| 36 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_DIVIDERSELECT, 0); |
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| 37 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_FIRSTEND, 131); |
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| 38 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_FIRSTSTART, 0); |
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| 39 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RAMWRITE, 0x15C); |
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| 40 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESET, 0); |
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| 41 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESETLCD, 1); |
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| 42 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_ROWSET, 0x115); |
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| 43 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_SECONDEND, 131); |
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| 44 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_SECONDSTART, 0); |
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| 45 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_SEND, 0); |
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| 46 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_TOTALCMDTRANSFER, 10); |
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| 47 | |
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| 48 | //Reset and initialize the LCD and SPI controller state machines |
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| 49 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESET, 1); |
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| 50 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_TOTALCMDTRANSFER, 50); //Number of commands in RAM by default |
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| 51 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_SEND, 0); |
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| 52 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_RESET, 0); |
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| 53 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_ROWSET, LCDCMD_CASET); |
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| 54 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_COLSET, LCDCMD_PASET); |
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| 55 | |
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| 56 | |
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| 57 | /* The LCD controller command buffer contains the correct initialization commands for a board in slot 1 with non-inverted colors |
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| 58 | * These commands will be sent when this function asserts LCD_SEND below |
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| 59 | * If you want to customize the initialization sequence, use a different slot or invert the colors, you'll need the code below |
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| 60 | * Change INCLUDE_LCD_INIT_CODE to 1 in the header file, then customize the initial values for the array below |
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| 61 | * If you change the total number of commands (50 by default), be sure to update the value written to LCD_TOTALCMDTRANSFER above |
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| 62 | */ |
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| 63 | #if INCLUDE_LCD_INIT_CODE |
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| 64 | //Define the command buffer |
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| 65 | unsigned short cmds[50]; |
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| 66 | |
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| 67 | //Populate the command buffer with the required at-boot setup command sequence |
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| 68 | cmds[0] = LCDCMD_DISCTL; |
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| 69 | cmds[1] = 0x03; |
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| 70 | cmds[2] = 32; |
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| 71 | cmds[3] = 12; |
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| 72 | cmds[4] = 0x00; |
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| 73 | cmds[5] = LCDCMD_COMSCN; |
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| 74 | cmds[6] = 0x01; |
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| 75 | cmds[7] = LCDCMD_OSCON; |
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| 76 | cmds[8] = LCDCMD_SLPOUT; |
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| 77 | cmds[9] = LCDCMD_VOLCTR; |
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| 78 | cmds[10] = 25; |
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| 79 | cmds[11] = 0x03; |
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| 80 | cmds[12] = LCDCMD_PWRCTR; |
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| 81 | cmds[13] = 0x0f; |
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| 82 | cmds[14] = invertColors ? LCDCMD_NOP : LCDCMD_DISINV; |
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| 83 | cmds[15] = LCDCMD_DATCTL; |
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| 84 | cmds[16] = (slotNumber <= 2) ? 0x05 : 0x06; //Slots 3/4: rotate the screen orientation 180 degrees |
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| 85 | cmds[17] = 0; |
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| 86 | cmds[18] = 0x01; |
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| 87 | cmds[19] = 0x00; |
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| 88 | cmds[20] = LCDCMD_RGBSET8; |
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| 89 | cmds[21] = 0; |
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| 90 | cmds[22] = 2; |
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| 91 | cmds[23] = 4; |
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| 92 | cmds[24] = 6; |
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| 93 | cmds[25] = 8; |
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| 94 | cmds[26] = 10; |
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| 95 | cmds[27] = 12; |
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| 96 | cmds[28] = 15; |
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| 97 | cmds[29] = 0; |
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| 98 | cmds[30] = 2; |
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| 99 | cmds[31] = 4; |
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| 100 | cmds[32] = 6; |
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| 101 | cmds[33] = 8; |
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| 102 | cmds[34] = 10; |
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| 103 | cmds[35] = 12; |
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| 104 | cmds[36] = 15; |
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| 105 | cmds[37] = 0; |
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| 106 | cmds[38] = 4; |
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| 107 | cmds[39] = 9; |
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| 108 | cmds[40] = 15; |
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| 109 | cmds[41] = LCDCMD_NOP; |
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| 110 | cmds[42] = LCDCMD_PASET; |
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| 111 | cmds[43] = 2; |
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| 112 | cmds[44] = 130; |
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| 113 | cmds[45] = LCDCMD_CASET; |
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| 114 | cmds[46] = 2; |
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| 115 | cmds[47] = 130; |
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| 116 | cmds[48] = LCDCMD_DISON; |
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| 117 | cmds[49] = LCDCMD_RAMWR; |
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| 118 | |
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| 119 | //Copy the command buffer to the board controller |
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| 120 | memcpy((void *)LCD_COMMAND_BUFFER, (void *)(&cmds), 50*sizeof(short)); |
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| 121 | #endif |
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| 122 | |
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| 123 | //Trigger the SPI state machine; this will write LCD_TOTALCMDTRANSFER commands to the LCD controller IC |
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| 124 | XIo_Out32(USER_IO_BOARD_CONTROLLER_LCD_SEND, 1); |
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| 125 | |
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| 126 | //Done! The LCD should now be displaying the character map (the default contents of character buffer 0) |
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| 127 | //User code can now overwrite the character and character map buffers |
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| 128 | return; |
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| 129 | } |
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| 130 | |
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| 131 | ///@brief Prints characters to the LCD display |
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| 132 | ///@param chars Pointer to array of characters to print; the first entry will be the left-most character displayed |
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| 133 | ///@param numChars Number of characters from chars to print; must be one of [4,8,12,16]; numChars + col must not exceed 16 |
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| 134 | ///@param line Line number on the LCD to print the characters; must be integer in [0...15] |
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| 135 | ///@param col Column to start displayng the characters; must be one of [0,4,8,12]; numChars + col must not exceed 16 |
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| 136 | ///@param charBuf Selects which character buffer in the controller to write; must be integer in [0,7] |
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| 137 | int warp_userio_lcd_print(unsigned char* chars, unsigned char numChars, unsigned char line, unsigned char col, unsigned char charBuf) |
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| 138 | { |
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| 139 | int i; |
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| 140 | //If any of the parameters don't make sense, return immediately |
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| 141 | if( |
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| 142 | (numChars == 0) | (numChars > (16 - col) ) | ((numChars & 0x3) > 0) | |
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| 143 | (line > 15) | |
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| 144 | (col > 15) | ((col & 0x3) > 0) | |
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| 145 | charBuf > 7 |
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| 146 | ) |
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| 147 | return -1; |
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| 148 | |
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| 149 | //Use a for loop over 32-bit writes; for some reason, memcpy is useless unless you write a full 16-character line |
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| 150 | for(i = 0; i<numChars; i=i+4) |
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| 151 | { |
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| 152 | XIo_Out32((warp_userioboard_get_lcd_charbufaddr(charBuf) + line*16 + col + i), *(unsigned int *)(chars + i)); |
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| 153 | } |
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| 154 | |
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| 155 | return 0; |
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| 156 | } |
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| 157 | |
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| 158 | ///@brief Reads an image file from a CompactFlash card and displays it on the LCD screen; this function overwrites the chracter map and character buffer 7 |
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| 159 | /// |
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| 160 | ///@param filename String giving the name of the file to read; the file should be FAT16/8.3 compatible name ("image.rgb", for example) |
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| 161 | int warp_userio_lcd_displayCFimage(const char* filename) |
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| 162 | { |
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| 163 | #ifdef XPAR_SYSACE_0_DEVICE_ID |
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| 164 | #ifdef XILFATFS_MAXFILES |
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| 165 | int i, status; |
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| 166 | void* fid; |
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| 167 | |
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| 168 | fid = sysace_fopen(filename, "r"); |
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| 169 | |
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| 170 | if(fid == 0) |
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| 171 | return -2; //fopen failed |
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| 172 | |
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| 173 | //Read 128x128 8-bit pixel values from the CF card |
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| 174 | status = sysace_fread((void *)LCD_CHARMAP_BUFFER, 1, 16384, fid); |
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| 175 | |
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| 176 | if(status != 16384) |
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| 177 | return -3; //Didn't read enough bytes; who knows what state the character map is in now |
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| 178 | |
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| 179 | status = sysace_fclose(fid); |
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| 180 | |
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| 181 | if(status != 0) |
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| 182 | return -4; //fclose failed; the Sysace controller is likely in a really bad state at this point |
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| 183 | |
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| 184 | //Write [0,1...255] to character buffer 7 |
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| 185 | //This is required so that each block in the new "character map" (the image) can be read in order |
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| 186 | //The character buffer is a 32-bit memory and must be written 4 bytes at a time (there are no byte-enables on this RAM) |
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| 187 | for(i=0; i<256; i=i+4) |
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| 188 | { |
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| 189 | //Write 4-bytes: [i i+1 i+2 i+3] |
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| 190 | XIo_Out32((warp_userioboard_get_lcd_charbufaddr(7)+i), ((i<<24) + ((i+1)<<16) + ((i+2)<<8) + ((i+3)<<0))); |
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| 191 | } |
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| 192 | |
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| 193 | //Switch the dipslay to character buffer 7 |
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| 194 | warp_userioboard_set_lcd_charbuf(7); |
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| 195 | |
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| 196 | return 0; //Success |
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| 197 | #endif |
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| 198 | #endif |
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| 199 | |
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| 200 | //If the project doesn't have a SysaceACE controller or xil_fatfs library, fail immediately |
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| 201 | return -1; |
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| 202 | } |
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| 203 | |
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| 204 | ///@brief Configures the buzzer waveform generator |
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| 205 | /// |
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| 206 | ///@param period Sets the period of the buzzer control signal, in units of bus clock cycles; interpreted as 18-bit unsigned integer in hardware |
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| 207 | ///@param dutyCycle Sets the duty cycles of the buzzer control signal; intrepreted as UFix18_18 (18-bit unsigned fraction) in hardware |
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| 208 | void warp_userioboard_buzzer_set(unsigned int period, unsigned int dutyCycle) |
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| 209 | { |
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| 210 | //Set the buzzer period, in units of bus clock cycles |
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| 211 | // For example, given a 50MHz bus, period=50000 would generate a 1kHz tone |
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| 212 | XIo_Out32(USER_IO_BOARD_CONTROLLER_BUZZER_PERIOD, (unsigned int)period); |
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| 213 | |
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| 214 | // dutyCycle is a UFix18_18 fraction that sets the fraction of each period the buzzer is enabled |
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| 215 | // The value is handed as an unsigned int here to avoid floating point code bloat |
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| 216 | // The user needs to provide the int corresponding to the UFix18_18 value they want |
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| 217 | // A value of 0.05 (13107 as an int) is a good starting point |
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| 218 | XIo_Out32(USER_IO_BOARD_CONTROLLER_BUZZER_DUTYCYCLE, (unsigned int)dutyCycle); |
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| 219 | |
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| 220 | return; |
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| 221 | } |
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