Bálint Ferencz / Mbed 2 deprecated le_curupp

Dependencies:   mbed NetServicesMin

MODDMA/INIT.cpp@0:aa9ebbd3715f, 2012-06-18 (annotated)

Committer:
fernya
Date:
Mon Jun 18 03:59:39 2012 +0000
Revision:
0:aa9ebbd3715f
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UserRevisionLine numberNew contents of line
fernya 0:aa9ebbd3715f 1 /*
fernya 0:aa9ebbd3715f 2 Copyright (c) 2010 Andy Kirkham
fernya 0:aa9ebbd3715f 3
fernya 0:aa9ebbd3715f 4 Permission is hereby granted, free of charge, to any person obtaining a copy
fernya 0:aa9ebbd3715f 5 of this software and associated documentation files (the "Software"), to deal
fernya 0:aa9ebbd3715f 6 in the Software without restriction, including without limitation the rights
fernya 0:aa9ebbd3715f 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fernya 0:aa9ebbd3715f 8 copies of the Software, and to permit persons to whom the Software is
fernya 0:aa9ebbd3715f 9 furnished to do so, subject to the following conditions:
fernya 0:aa9ebbd3715f 10
fernya 0:aa9ebbd3715f 11 The above copyright notice and this permission notice shall be included in
fernya 0:aa9ebbd3715f 12 all copies or substantial portions of the Software.
fernya 0:aa9ebbd3715f 13
fernya 0:aa9ebbd3715f 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fernya 0:aa9ebbd3715f 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fernya 0:aa9ebbd3715f 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fernya 0:aa9ebbd3715f 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fernya 0:aa9ebbd3715f 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fernya 0:aa9ebbd3715f 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
fernya 0:aa9ebbd3715f 20 THE SOFTWARE.
fernya 0:aa9ebbd3715f 21 */
fernya 0:aa9ebbd3715f 22
fernya 0:aa9ebbd3715f 23 #include "MODDMA.h"
fernya 0:aa9ebbd3715f 24
fernya 0:aa9ebbd3715f 25 namespace AjK {
fernya 0:aa9ebbd3715f 26
fernya 0:aa9ebbd3715f 27 extern uint32_t oldDMAHandler;
fernya 0:aa9ebbd3715f 28 extern "C" void MODDMA_IRQHandler(void);
fernya 0:aa9ebbd3715f 29 extern class MODDMA *moddma_p;
fernya 0:aa9ebbd3715f 30
fernya 0:aa9ebbd3715f 31 void
fernya 0:aa9ebbd3715f 32 MODDMA::init(bool isConstructorCalling, int Channels, int Tc, int Err)
fernya 0:aa9ebbd3715f 33 {
fernya 0:aa9ebbd3715f 34 if (isConstructorCalling) {
fernya 0:aa9ebbd3715f 35 if (LPC_SC->PCONP & (1UL << 29)) {
fernya 0:aa9ebbd3715f 36 if (LPC_GPDMA->DMACConfig & 1) {
fernya 0:aa9ebbd3715f 37 error("Only one instance of MODDMA can exist.");
fernya 0:aa9ebbd3715f 38 }
fernya 0:aa9ebbd3715f 39 }
fernya 0:aa9ebbd3715f 40 LPC_SC->PCONP |= (1UL << 29);
fernya 0:aa9ebbd3715f 41 LPC_GPDMA->DMACConfig = 1;
fernya 0:aa9ebbd3715f 42 moddma_p = this;
fernya 0:aa9ebbd3715f 43 for (int i = 0; i < 8; i++) {
fernya 0:aa9ebbd3715f 44 setups[i] = (MODDMA_Config *)NULL;
fernya 0:aa9ebbd3715f 45 }
fernya 0:aa9ebbd3715f 46 }
fernya 0:aa9ebbd3715f 47
fernya 0:aa9ebbd3715f 48 // Reset channel configuration register(s)
fernya 0:aa9ebbd3715f 49 if (Channels & 0x01) LPC_GPDMACH0->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 50 if (Channels & 0x02) LPC_GPDMACH1->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 51 if (Channels & 0x04) LPC_GPDMACH2->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 52 if (Channels & 0x08) LPC_GPDMACH3->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 53 if (Channels & 0x10) LPC_GPDMACH4->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 54 if (Channels & 0x20) LPC_GPDMACH5->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 55 if (Channels & 0x40) LPC_GPDMACH6->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 56 if (Channels & 0x80) LPC_GPDMACH7->DMACCConfig = 0;
fernya 0:aa9ebbd3715f 57
fernya 0:aa9ebbd3715f 58 /* Clear DMA interrupt and error flag */
fernya 0:aa9ebbd3715f 59 LPC_GPDMA->DMACIntTCClear = Tc;
fernya 0:aa9ebbd3715f 60 LPC_GPDMA->DMACIntErrClr = Err;
fernya 0:aa9ebbd3715f 61
fernya 0:aa9ebbd3715f 62 if (isConstructorCalling) {
fernya 0:aa9ebbd3715f 63 oldDMAHandler = NVIC_GetVector(DMA_IRQn);
fernya 0:aa9ebbd3715f 64 NVIC_SetVector(DMA_IRQn, (uint32_t)MODDMA_IRQHandler);
fernya 0:aa9ebbd3715f 65 NVIC_EnableIRQ(DMA_IRQn);
fernya 0:aa9ebbd3715f 66 }
fernya 0:aa9ebbd3715f 67 }
fernya 0:aa9ebbd3715f 68
fernya 0:aa9ebbd3715f 69 }; // namespace AjK ends