PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)
Dependents: YATTT sd_map_test cPong SnowDemo ... more
PokittoLib
Library for programming Pokitto hardware
How to Use
- Import this library to online compiler (see button "import" on the right hand side
- DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
- Change My_settings.h according to your project
- Start coding!
POKITTO_HW/dma_11u6x.c@71:531419862202, 2019-12-25 (annotated)
- Committer:
- Pokitto
- Date:
- Wed Dec 25 23:59:52 2019 +0000
- Revision:
- 71:531419862202
- Parent:
- 30:796f9611d2ac
Changed Mode2 C++ refresh code (graphical errors)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Pokitto | 30:796f9611d2ac | 1 | /* |
Pokitto | 30:796f9611d2ac | 2 | * @brief LPC11u6x DMA chip driver |
Pokitto | 30:796f9611d2ac | 3 | * |
Pokitto | 30:796f9611d2ac | 4 | * @note |
Pokitto | 30:796f9611d2ac | 5 | * Copyright(C) NXP Semiconductors, 2013 |
Pokitto | 30:796f9611d2ac | 6 | * All rights reserved. |
Pokitto | 30:796f9611d2ac | 7 | * |
Pokitto | 30:796f9611d2ac | 8 | * @par |
Pokitto | 30:796f9611d2ac | 9 | * Software that is described herein is for illustrative purposes only |
Pokitto | 30:796f9611d2ac | 10 | * which provides customers with programming information regarding the |
Pokitto | 30:796f9611d2ac | 11 | * LPC products. This software is supplied "AS IS" without any warranties of |
Pokitto | 30:796f9611d2ac | 12 | * any kind, and NXP Semiconductors and its licensor disclaim any and |
Pokitto | 30:796f9611d2ac | 13 | * all warranties, express or implied, including all implied warranties of |
Pokitto | 30:796f9611d2ac | 14 | * merchantability, fitness for a particular purpose and non-infringement of |
Pokitto | 30:796f9611d2ac | 15 | * intellectual property rights. NXP Semiconductors assumes no responsibility |
Pokitto | 30:796f9611d2ac | 16 | * or liability for the use of the software, conveys no license or rights under any |
Pokitto | 30:796f9611d2ac | 17 | * patent, copyright, mask work right, or any other intellectual property rights in |
Pokitto | 30:796f9611d2ac | 18 | * or to any products. NXP Semiconductors reserves the right to make changes |
Pokitto | 30:796f9611d2ac | 19 | * in the software without notification. NXP Semiconductors also makes no |
Pokitto | 30:796f9611d2ac | 20 | * representation or warranty that such application will be suitable for the |
Pokitto | 30:796f9611d2ac | 21 | * specified use without further testing or modification. |
Pokitto | 30:796f9611d2ac | 22 | * |
Pokitto | 30:796f9611d2ac | 23 | * @par |
Pokitto | 30:796f9611d2ac | 24 | * Permission to use, copy, modify, and distribute this software and its |
Pokitto | 30:796f9611d2ac | 25 | * documentation is hereby granted, under NXP Semiconductors' and its |
Pokitto | 30:796f9611d2ac | 26 | * licensor's relevant copyrights in the software, without fee, provided that it |
Pokitto | 30:796f9611d2ac | 27 | * is used in conjunction with NXP Semiconductors microcontrollers. This |
Pokitto | 30:796f9611d2ac | 28 | * copyright, permission, and disclaimer notice must appear in all copies of |
Pokitto | 30:796f9611d2ac | 29 | * this code. |
Pokitto | 30:796f9611d2ac | 30 | */ |
Pokitto | 30:796f9611d2ac | 31 | |
Pokitto | 30:796f9611d2ac | 32 | //#include "lpc_defs.h" |
Pokitto | 30:796f9611d2ac | 33 | #include "dma_11u6x.h" |
Pokitto | 30:796f9611d2ac | 34 | |
Pokitto | 30:796f9611d2ac | 35 | #define false 0 |
Pokitto | 30:796f9611d2ac | 36 | #define true 1 |
Pokitto | 30:796f9611d2ac | 37 | |
Pokitto | 30:796f9611d2ac | 38 | /***************************************************************************** |
Pokitto | 30:796f9611d2ac | 39 | * Private types/enumerations/variables |
Pokitto | 30:796f9611d2ac | 40 | ****************************************************************************/ |
Pokitto | 30:796f9611d2ac | 41 | |
Pokitto | 30:796f9611d2ac | 42 | /***************************************************************************** |
Pokitto | 30:796f9611d2ac | 43 | * Public types/enumerations/variables |
Pokitto | 30:796f9611d2ac | 44 | ****************************************************************************/ |
Pokitto | 30:796f9611d2ac | 45 | |
Pokitto | 30:796f9611d2ac | 46 | #ifdef __cplusplus |
Pokitto | 30:796f9611d2ac | 47 | extern "C" { |
Pokitto | 30:796f9611d2ac | 48 | #endif |
Pokitto | 30:796f9611d2ac | 49 | |
Pokitto | 30:796f9611d2ac | 50 | /* DMA SRAM table - this can be optionally used with the Chip_DMA_SetSRAMBase() |
Pokitto | 30:796f9611d2ac | 51 | function if a DMA SRAM table is needed. This table is correctly aligned for |
Pokitto | 30:796f9611d2ac | 52 | the DMA controller. */ |
Pokitto | 30:796f9611d2ac | 53 | #if defined(__CC_ARM) |
Pokitto | 30:796f9611d2ac | 54 | /* Keil alignement to 256 bytes */ |
Pokitto | 30:796f9611d2ac | 55 | __align(256) DMA_CHDESC_T Chip_DMA_Table[MAX_DMA_CHANNEL]; |
Pokitto | 30:796f9611d2ac | 56 | #endif /* defined (__CC_ARM) */ |
Pokitto | 30:796f9611d2ac | 57 | |
Pokitto | 30:796f9611d2ac | 58 | /* IAR support */ |
Pokitto | 30:796f9611d2ac | 59 | #if defined(__ICCARM__) |
Pokitto | 30:796f9611d2ac | 60 | /* IAR EWARM alignement to 256 bytes */ |
Pokitto | 30:796f9611d2ac | 61 | #pragma data_alignment=256 |
Pokitto | 30:796f9611d2ac | 62 | DMA_CHDESC_T Chip_DMA_Table[MAX_DMA_CHANNEL]; |
Pokitto | 30:796f9611d2ac | 63 | #endif /* defined (__ICCARM__) */ |
Pokitto | 30:796f9611d2ac | 64 | |
Pokitto | 30:796f9611d2ac | 65 | #if defined( __GNUC__ ) |
Pokitto | 30:796f9611d2ac | 66 | /* GNU alignement to 256 bytes */ |
Pokitto | 30:796f9611d2ac | 67 | DMA_CHDESC_T Chip_DMA_Table[MAX_DMA_CHANNEL] __attribute__ ((aligned(256))); |
Pokitto | 30:796f9611d2ac | 68 | #endif /* defined (__GNUC__) */ |
Pokitto | 30:796f9611d2ac | 69 | |
Pokitto | 30:796f9611d2ac | 70 | #ifdef __cplusplus |
Pokitto | 30:796f9611d2ac | 71 | } |
Pokitto | 30:796f9611d2ac | 72 | #endif |
Pokitto | 30:796f9611d2ac | 73 | |
Pokitto | 30:796f9611d2ac | 74 | /***************************************************************************** |
Pokitto | 30:796f9611d2ac | 75 | * Private functions |
Pokitto | 30:796f9611d2ac | 76 | ****************************************************************************/ |
Pokitto | 30:796f9611d2ac | 77 | |
Pokitto | 30:796f9611d2ac | 78 | /***************************************************************************** |
Pokitto | 30:796f9611d2ac | 79 | * Public functions |
Pokitto | 30:796f9611d2ac | 80 | ****************************************************************************/ |
Pokitto | 30:796f9611d2ac | 81 | |
Pokitto | 30:796f9611d2ac | 82 | /* Set DMA transfer register interrupt bits (safe) */ |
Pokitto | 30:796f9611d2ac | 83 | void Chip_DMA_SetTranBits(LPC_DMA_T *pDMA, DMA_CHID_T ch, uint32_t mask) |
Pokitto | 30:796f9611d2ac | 84 | { |
Pokitto | 30:796f9611d2ac | 85 | uint32_t temp; |
Pokitto | 30:796f9611d2ac | 86 | |
Pokitto | 30:796f9611d2ac | 87 | /* Read and write values may not be the same, write 0 to |
Pokitto | 30:796f9611d2ac | 88 | undefined bits */ |
Pokitto | 30:796f9611d2ac | 89 | temp = pDMA->DMACH[ch].XFERCFG & ~0xFC000CC0; |
Pokitto | 30:796f9611d2ac | 90 | |
Pokitto | 30:796f9611d2ac | 91 | pDMA->DMACH[ch].XFERCFG = temp | mask; |
Pokitto | 30:796f9611d2ac | 92 | } |
Pokitto | 30:796f9611d2ac | 93 | |
Pokitto | 30:796f9611d2ac | 94 | /* Clear DMA transfer register interrupt bits (safe) */ |
Pokitto | 30:796f9611d2ac | 95 | void Chip_DMA_ClearTranBits(LPC_DMA_T *pDMA, DMA_CHID_T ch, uint32_t mask) |
Pokitto | 30:796f9611d2ac | 96 | { |
Pokitto | 30:796f9611d2ac | 97 | uint32_t temp; |
Pokitto | 30:796f9611d2ac | 98 | |
Pokitto | 30:796f9611d2ac | 99 | /* Read and write values may not be the same, write 0 to |
Pokitto | 30:796f9611d2ac | 100 | undefined bits */ |
Pokitto | 30:796f9611d2ac | 101 | temp = pDMA->DMACH[ch].XFERCFG & ~0xFC000CC0; |
Pokitto | 30:796f9611d2ac | 102 | |
Pokitto | 30:796f9611d2ac | 103 | pDMA->DMACH[ch].XFERCFG = temp & ~mask; |
Pokitto | 30:796f9611d2ac | 104 | } |
Pokitto | 30:796f9611d2ac | 105 | |
Pokitto | 30:796f9611d2ac | 106 | /* Update the transfer size in an existing DMA channel transfer configuration */ |
Pokitto | 30:796f9611d2ac | 107 | void Chip_DMA_SetupChannelTransferSize(LPC_DMA_T *pDMA, DMA_CHID_T ch, uint32_t trans) |
Pokitto | 30:796f9611d2ac | 108 | { |
Pokitto | 30:796f9611d2ac | 109 | Chip_DMA_ClearTranBits(pDMA, ch, (0x3FF << 16)); |
Pokitto | 30:796f9611d2ac | 110 | Chip_DMA_SetTranBits(pDMA, ch, DMA_XFERCFG_XFERCOUNT(trans)); |
Pokitto | 30:796f9611d2ac | 111 | } |
Pokitto | 30:796f9611d2ac | 112 | |
Pokitto | 30:796f9611d2ac | 113 | /* Sets up a DMA channel with the passed DMA transfer descriptor */ |
Pokitto | 30:796f9611d2ac | 114 | bool Chip_DMA_SetupTranChannel(LPC_DMA_T *pDMA, DMA_CHID_T ch, DMA_CHDESC_T *desc) |
Pokitto | 30:796f9611d2ac | 115 | { |
Pokitto | 30:796f9611d2ac | 116 | bool good = false; |
Pokitto | 30:796f9611d2ac | 117 | DMA_CHDESC_T *pDesc = (DMA_CHDESC_T *) pDMA->SRAMBASE; |
Pokitto | 30:796f9611d2ac | 118 | |
Pokitto | 30:796f9611d2ac | 119 | if ((Chip_DMA_GetActiveChannels(pDMA) & (1 << ch)) == 0) { |
Pokitto | 30:796f9611d2ac | 120 | /* Channel is not active, so update the descriptor */ |
Pokitto | 30:796f9611d2ac | 121 | pDesc[ch] = *desc; |
Pokitto | 30:796f9611d2ac | 122 | |
Pokitto | 30:796f9611d2ac | 123 | good = true; |
Pokitto | 30:796f9611d2ac | 124 | } |
Pokitto | 30:796f9611d2ac | 125 | |
Pokitto | 30:796f9611d2ac | 126 | return good; |
Pokitto | 30:796f9611d2ac | 127 | } |
Pokitto | 30:796f9611d2ac | 128 |