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Picaso_4DGL-32PTU_Media.cpp@13:1a0800957412, 2016-09-15 (annotated)
- Committer:
- CaptainR
- Date:
- Thu Sep 15 08:04:37 2016 +0000
- Revision:
- 13:1a0800957412
- Parent:
- 12:29f5ad896382
- Child:
- 14:561cb06a2739
Fixed RX callback function, fixed uSD read function
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
CaptainR | 12:29f5ad896382 | 1 | // |
CaptainR | 12:29f5ad896382 | 2 | // Picaso_4DGL-32PTU is a class to drive 4D Systems TFT touch screens with PICASO processor |
CaptainR | 12:29f5ad896382 | 3 | // Tested with NUCLEO L152RE development board |
CaptainR | 12:29f5ad896382 | 4 | // Copyright (C) <2016> Rihards Balass <rihards.balass@gmail.com> |
CaptainR | 12:29f5ad896382 | 5 | // |
CaptainR | 12:29f5ad896382 | 6 | // Picaso_4DGL-32PTU is free software: you can redistribute it and/or modify |
CaptainR | 12:29f5ad896382 | 7 | // it under the terms of the GNU General Public License as published by |
CaptainR | 12:29f5ad896382 | 8 | // the Free Software Foundation, either version 3 of the License, or |
CaptainR | 12:29f5ad896382 | 9 | // (at your option) any later version. |
CaptainR | 12:29f5ad896382 | 10 | // |
CaptainR | 12:29f5ad896382 | 11 | // Picaso_4DGL-32PTU is distributed in the hope that it will be useful, |
CaptainR | 12:29f5ad896382 | 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
CaptainR | 12:29f5ad896382 | 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
CaptainR | 12:29f5ad896382 | 14 | // GNU General Public License for more details. |
CaptainR | 12:29f5ad896382 | 15 | // |
CaptainR | 12:29f5ad896382 | 16 | // You can see GNU General Public License at <http://www.gnu.org/licenses/>. |
CaptainR | 12:29f5ad896382 | 17 | // |
CaptainR | 12:29f5ad896382 | 18 | |
CaptainR | 12:29f5ad896382 | 19 | #include "mbed.h" |
CaptainR | 12:29f5ad896382 | 20 | #include "Picaso_4DGL-32PTU.h" |
CaptainR | 12:29f5ad896382 | 21 | |
CaptainR | 12:29f5ad896382 | 22 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 23 | // The Media Init command initialises a uSD/SD/SDHC memory card for further operations. |
CaptainR | 12:29f5ad896382 | 24 | // The SD card is connected to the SPI (serial peripheral interface) of the PICASO-GFX2 chip. |
CaptainR | 12:29f5ad896382 | 25 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 26 | short PICASO_4DGL :: media_Init() { |
CaptainR | 12:29f5ad896382 | 27 | |
CaptainR | 12:29f5ad896382 | 28 | char command[2] = ""; |
CaptainR | 12:29f5ad896382 | 29 | |
CaptainR | 12:29f5ad896382 | 30 | command[0] = (MEDIA_INIT >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 31 | command[1] = (MEDIA_INIT >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 32 | |
CaptainR | 12:29f5ad896382 | 33 | writeCOMMAND(command, 2); |
CaptainR | 12:29f5ad896382 | 34 | short success = mediaInitResponse(); |
CaptainR | 12:29f5ad896382 | 35 | #ifdef DEBUGMODE |
CaptainR | 12:29f5ad896382 | 36 | pc.printf("\n\r DEBUG: uSD card INIT: %i\n\r", success); |
CaptainR | 12:29f5ad896382 | 37 | #endif |
CaptainR | 12:29f5ad896382 | 38 | return success; |
CaptainR | 12:29f5ad896382 | 39 | } |
CaptainR | 12:29f5ad896382 | 40 | |
CaptainR | 12:29f5ad896382 | 41 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 42 | // The Set Byte Address command sets the media memory internal |
CaptainR | 12:29f5ad896382 | 43 | // Address pointer for access at a non-sector aligned byte address. |
CaptainR | 12:29f5ad896382 | 44 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 45 | bool PICASO_4DGL :: media_SetAdd(int address) { |
CaptainR | 12:29f5ad896382 | 46 | |
CaptainR | 12:29f5ad896382 | 47 | char command[6] = ""; |
CaptainR | 12:29f5ad896382 | 48 | |
CaptainR | 12:29f5ad896382 | 49 | command[0] = (MEDIA_SET_ADD >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 50 | command[1] = (MEDIA_SET_ADD >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 51 | command[2] = (address >> (8*3)) & 0xff; |
CaptainR | 12:29f5ad896382 | 52 | command[3] = (address >> (8*2)) & 0xff; |
CaptainR | 12:29f5ad896382 | 53 | command[4] = (address >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 54 | command[5] = (address >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 55 | |
CaptainR | 12:29f5ad896382 | 56 | writeCOMMAND(command, 6); |
CaptainR | 12:29f5ad896382 | 57 | bool success = getResponse(1); |
CaptainR | 12:29f5ad896382 | 58 | #ifdef DEBUGMODE |
CaptainR | 12:29f5ad896382 | 59 | pc.printf("\n\r DEBUG: Set byte address: %i\n\r", success); |
CaptainR | 12:29f5ad896382 | 60 | #endif |
CaptainR | 12:29f5ad896382 | 61 | return success; |
CaptainR | 12:29f5ad896382 | 62 | } |
CaptainR | 12:29f5ad896382 | 63 | |
CaptainR | 12:29f5ad896382 | 64 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 65 | // The Set Sector Address command sets the media memory internal Address pointer for sector access. |
CaptainR | 12:29f5ad896382 | 66 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 67 | bool PICASO_4DGL :: media_SetSector(int address) { |
CaptainR | 12:29f5ad896382 | 68 | |
CaptainR | 12:29f5ad896382 | 69 | char command[6] = ""; |
CaptainR | 12:29f5ad896382 | 70 | |
CaptainR | 12:29f5ad896382 | 71 | command[0] = (MEDIA_SET_SECTOR >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 72 | command[1] = (MEDIA_SET_SECTOR >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 73 | command[2] = (address >> (8*3)) & 0xff; |
CaptainR | 12:29f5ad896382 | 74 | command[3] = (address >> (8*2)) & 0xff; |
CaptainR | 12:29f5ad896382 | 75 | command[4] = (address >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 76 | command[5] = (address >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 77 | |
CaptainR | 12:29f5ad896382 | 78 | writeCOMMAND(command, 6); |
CaptainR | 12:29f5ad896382 | 79 | bool success = getResponse(1); |
CaptainR | 12:29f5ad896382 | 80 | #ifdef DEBUGMODE |
CaptainR | 12:29f5ad896382 | 81 | pc.printf("\n\r DEBUG: Set sector address: %i\n\r", success); |
CaptainR | 12:29f5ad896382 | 82 | #endif |
CaptainR | 12:29f5ad896382 | 83 | return success; |
CaptainR | 12:29f5ad896382 | 84 | } |
CaptainR | 12:29f5ad896382 | 85 | |
CaptainR | 12:29f5ad896382 | 86 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 87 | // The Read Sector command reads and returns 512 bytes (256 words) |
CaptainR | 12:29f5ad896382 | 88 | // pointed to by the internal Sector pointer, determined by the |
CaptainR | 12:29f5ad896382 | 89 | // “Set Sector Address” command. |
CaptainR | 12:29f5ad896382 | 90 | // After the read the Sector pointer is automatically incremented by 1. |
CaptainR | 12:29f5ad896382 | 91 | // Answer = acknowledge (byte) , status (word), block (sector) = 1 + 2 + 512 = 515 bytes |
CaptainR | 12:29f5ad896382 | 92 | //************************************************************************** |
CaptainR | 13:1a0800957412 | 93 | bool PICASO_4DGL :: media_RdSector() { |
CaptainR | 12:29f5ad896382 | 94 | |
CaptainR | 12:29f5ad896382 | 95 | char command[2] = ""; |
CaptainR | 12:29f5ad896382 | 96 | |
CaptainR | 12:29f5ad896382 | 97 | command[0] = (MEDIA_READ_SECTOR >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 98 | command[1] = (MEDIA_READ_SECTOR >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 99 | |
CaptainR | 12:29f5ad896382 | 100 | writeCOMMAND(command, 2); |
CaptainR | 12:29f5ad896382 | 101 | bool success = readSectorResponse(515); |
CaptainR | 12:29f5ad896382 | 102 | #ifdef DEBUGMODE |
CaptainR | 13:1a0800957412 | 103 | pc.printf("\n\r DEBUG: Read sector: %i\n\r", success); |
CaptainR | 12:29f5ad896382 | 104 | #endif |
CaptainR | 12:29f5ad896382 | 105 | return success; |
CaptainR | 12:29f5ad896382 | 106 | } |
CaptainR | 12:29f5ad896382 | 107 | |
CaptainR | 12:29f5ad896382 | 108 | //************************************************************************** |
CaptainR | 12:29f5ad896382 | 109 | // The Write Sector command writes 512 bytes (256 words) from a source memory |
CaptainR | 12:29f5ad896382 | 110 | // block into the uSD card. After the write the Sect pointer is automatically incremented by 1. |
CaptainR | 12:29f5ad896382 | 111 | // Response = acknowledge (byte) , status (word) |
CaptainR | 12:29f5ad896382 | 112 | //************************************************************************** |
CaptainR | 13:1a0800957412 | 113 | bool PICASO_4DGL :: media_WrSector(char *block) { |
CaptainR | 12:29f5ad896382 | 114 | |
CaptainR | 12:29f5ad896382 | 115 | char command[514] = ""; |
CaptainR | 12:29f5ad896382 | 116 | |
CaptainR | 12:29f5ad896382 | 117 | command[0] = (MEDIA_WRITE_SECTOR >> (8*1)) & 0xff; |
CaptainR | 12:29f5ad896382 | 118 | command[1] = (MEDIA_WRITE_SECTOR >> (8*0)) & 0xff; |
CaptainR | 12:29f5ad896382 | 119 | |
CaptainR | 12:29f5ad896382 | 120 | int j = 2; |
CaptainR | 12:29f5ad896382 | 121 | int k = 0; |
CaptainR | 13:1a0800957412 | 122 | //writeCOMMAND(command, 2); |
CaptainR | 12:29f5ad896382 | 123 | bool success = readSectorResponse(515); |
CaptainR | 12:29f5ad896382 | 124 | #ifdef DEBUGMODE |
CaptainR | 12:29f5ad896382 | 125 | pc.printf("\n\r DEBUG: Set sector address: %i\n\r", success); |
CaptainR | 12:29f5ad896382 | 126 | #endif |
CaptainR | 12:29f5ad896382 | 127 | return success; |
CaptainR | 12:29f5ad896382 | 128 | } |
CaptainR | 12:29f5ad896382 | 129 | |
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