/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
files (startup_stm32f40_41xxx.s/startup_stm32f427_437xx.s/
startup_stm32f429_439xx.s/startup_stm32f401xx.s) before to branch to
application main. To reconfigure the default setting of SystemInit()
function, refer to system_stm32f4xx.c file
*/
/* Initialize LEDs on STM324x9I-EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
/* Configure the FMC interface : SDRAM */
FMC_Config();
/* Fill the buffer to write */
Fill_Buffer(aTxBuffer, BUFFER_SIZE, 0x250F);
/* Write data to the SDRAM memory */
for (uwIndex = 0; uwIndex < BUFFER_SIZE; uwIndex++)
{
*(__IO uint32_t*) (SDRAM_BANK_ADDR + WRITE_READ_ADDR + 4*uwIndex) = aTxBuffer[uwIndex];
}
/* Read back data from the SDRAM memory */
for (uwIndex = 0; uwIndex < BUFFER_SIZE; uwIndex++)
{
aRxBuffer[uwIndex] = *(__IO uint32_t*) (SDRAM_BANK_ADDR + WRITE_READ_ADDR + 4*uwIndex);
}
/* Check the SDRAM memory content correctness */
for (uwIndex = 0; (uwIndex < BUFFER_SIZE) && (uwWriteReadStatus == 0); uwIndex++)
{
if (aRxBuffer[uwIndex] != aTxBuffer[uwIndex])
{
uwWriteReadStatus++;
}
}
if (uwWriteReadStatus)
{
/* KO */
/* Turn on LD2 */
STM_EVAL_LEDOn(LED2);
}
else
{
/* OK */
/* Turn on LD1 */
STM_EVAL_LEDOn(LED1);
}
while (1)
{
}
}
int main(void)
{
MMSample *sampleFileDataStart = WaveTable;
size_t i;
/* Enable signalling routines for errors */
error_sig_init();
/* Enable external SRAM */
FMC_Config();
codecDmaTxPtr = NULL;
codecDmaRxPtr = NULL;
/* The bus the signal chain is reading */
MMBus *inBus = MMBus_new(BUS_BLOCK_SIZE,BUS_NUM_CHANS);
/* The bus the signal chain is writing */
MMBus *outBus = MMBus_new(BUS_BLOCK_SIZE,BUS_NUM_CHANS);
/* a signal chain to put the signal processors into */
MMSigChain sigChain;
MMSigChain_init(&sigChain);
/* A constant that zeros the bus each iteration */
MMSigConst sigConst;
MMSigConst_init(&sigConst,outBus,0,MMSigConst_doSum_FALSE);
/* put sig constant at the top of the sig chain */
MMSigProc_insertAfter(&sigChain.sigProcs,&sigConst);
/* initialize wavetables */
WaveTable_init();
/* Give access to samples of sound as wave table */
MMArray_set_data(&samples, WaveTable);
MMArray_set_length(&samples, WAVTABLE_LENGTH_SAMPLES);
/* Set with this samplerate so it plays at normal speed when midi note 69
* received */
samples.samplerate = 440 * WAVTABLE_LENGTH_SAMPLES;//CODEC_SAMPLE_RATE;
/* Allow MMWavTabRecorder to record into samples */
MMWavTabRecorder_init(&wtr);
wtr.buffer = &samples;
wtr.inputBus = inBus;
wtr.currentIndex = 0;
wtr.state = MMWavTabRecorderState_RECORDING;
/* Put MMWavTabRecorder at the top of the signal chain */
MMSigProc_insertAfter(&sigChain.sigProcs,&wtr);
/* Make poly voice manager */
pvm = MMPolyManager_new(MIDI_NUM_NOTES);
/* Enable MIDI hardware */
MIDI_low_level_setup();
/* Initialize MIDI Message builder */
MIDIMsgBuilder_init(&midiMsgBuilder);
/* set up the MIDI router to trigger samples */
MIDI_Router_Standard_init(&midiRouter);
for (i = 0; i < MIDI_NUM_NOTES; i++) {
/* Initialize sample player */
MMTrapEnvedSamplePlayer_init(&spsps[i], outBus, BUS_BLOCK_SIZE,
1. / (MMSample)CODEC_SAMPLE_RATE);
/* Make new poly voice and add it to the poly voice manager */
MMPolyManager_addVoice(pvm, i, (MMPolyVoice*)MMPvtesp_new(&spsps[i]));
/* insert in signal chain after sig const*/
MMSigProc_insertAfter(&sigConst, &spsps[i]);
}
MIDI_Router_addCB(&midiRouter.router, MIDIMSG_NOTE_ON, 1, MIDI_note_on_do, spsps);
MIDI_Router_addCB(&midiRouter.router, MIDIMSG_NOTE_OFF, 1, MIDI_note_off_do, spsps);
MIDI_CC_CB_Router_addCB(&midiRouter.cbRouters[0],2,MIDI_cc_do,&wtr);
MIDI_CC_CB_Router_addCB(&midiRouter.cbRouters[0],3,MIDI_cc_rate_control,&playbackRate);
MIDI_CC_CB_Router_addCB(&midiRouter.cbRouters[0],4,MIDI_cc_period_control,&eventPeriod);
MIDI_CC_CB_Router_addCB(&midiRouter.cbRouters[0],5,MIDI_cc_length_control,&eventLength);
/* set up note scheduler */
MMSeq *sequence = MMSeq_new();
MMSeq_init(sequence, 0);
/* Enable codec */
i2s_dma_full_duplex_setup(CODEC_SAMPLE_RATE);
while (1) {
while (!(codecDmaTxPtr && codecDmaRxPtr));
if ((MMSeq_getCurrentTime(sequence) % eventPeriod) == 0) {
/* Make event */
NoteOnEvent *noe = NoteOnEvent_new();
MMPvtespParams *params = MMPvtespParams_new();
params->paramType = MMPvtespParamType_NOTEON;
params->note = get_next_free_voice_number();
params->amplitude = 1.0;
params->interpolation = MMInterpMethod_CUBIC;
params->index = 0;
params->attackTime = ATTACK_TIME;
params->releaseTime = RELEASE_TIME;
params->samples = &samples;
params->loop = 1;
params->rate = playbackRate;
params->rateSource = MMPvtespRateSource_RATE;
NoteOnEvent_init(noe,pvm,params,sequence,eventLength);
/* Schedule event to happen now */
MMSeq_scheduleEvent(sequence,(MMEvent*)noe,MMSeq_getCurrentTime(sequence));
}
/* Do scheduled events and tick */
MMSeq_doAllCurrentEvents(sequence);
MMSeq_tick(sequence);
MIDI_process_buffer(); /* process MIDI at most every audio block */
MMSigProc_tick(&sigChain);
size_t i;
for (i = 0; i < CODEC_DMA_BUF_LEN; i += 2) {
/* write out data */
codecDmaTxPtr[i] = FLOAT_TO_INT16(outBus->data[i/2] * 0.1);
codecDmaTxPtr[i+1] = FLOAT_TO_INT16(outBus->data[i/2] * 0.1);
/* read in data */
inBus->data[i/2] = INT16_TO_FLOAT(codecDmaRxPtr[i]);
}
codecDmaTxPtr = NULL;
codecDmaRxPtr = NULL;
}
}