Posted by skovholm on 2015-08-10 21:17

HI

This one give me a tone, but it do not stop...it continue and the stm32f7 do frezee ........anybody with an idea ?

1. include “stm32746g_discovery_audio.h”
2. include “stm32f7xx_hal_sai.h”
3. include “stm32f7xx_hal_i2s.h”
4. include “main.h”
5. include “GUI.h”
6. include “DIALOG.h”
7. include “WM.h”

//Sin table values
uint16_t Sine550hz128 = { 32767, 39811, 46526, 52597, 57741,
61717, 64340, 65486, 65102, 63207,
59888, 55301, 49660, 43230, 36310,
29224, 22304, 15874, 10233, 5646,
2327, 432, 48, 1194, 3817, 7793,
12937, 19008, 25723,
32767, 39811, 46526, 52597, 57741,
61717, 64340, 65486, 65102, 63207,
59888, 55301, 49660, 43230, 36310,
29224, 22304, 15874, 10233, 5646,
2327, 432, 48, 1194, 3817, 7793,
12937, 19008, 25723,
32767, 39811, 46526, 52597, 57741,
61717, 64340, 65486, 65102, 63207,
59888, 55301, 49660, 43230, 36310,
29224, 22304, 15874, 10233, 5646,
2327, 432, 48, 1194, 3817, 7793,
12937, 19008, 25723,
32767, 39811, 46526, 52597, 57741,
61717, 64340, 65486, 65102, 63207,
59888, 55301, 49660, 43230, 36310,
29224, 22304, 15874, 10233, 5646,
2327, 432, 48, 1194, 3817, 7793,
12937, 19008, 25723};

static __IO uint32_t hjhVolume = 35;

void hjhAudioInit()
{
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_BOTH, hjhVolume, I2S_AUDIOFREQ_8K);
BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
}
void hjhAudioTone(){
BSP_AUDIO_OUT_SetVolume(hjhVolume);
int res = BSP_AUDIO_OUT_Play((uint16_t*)&Sine550hz0,sizeof(Sine550hz));
GUI_DispDecAt(res, 0, 60,5);
}

void BSP_AUDIO_OUT_TransferComplete_CallBack()
{
BSP_AUDIO_OUT_Stop(CODEC_PDWN_SW);
}

Posted by skovholm on 2015-11-09 22:30

HI

Forget to tell you that it is working very fine ;o)
Now i am playing with getting the DSP functions to work .....

Hjalmar

Posted by darthvader on 2015-11-11 13:36

Hi

I’m acyually trying to do the same but with just one word per channel at a given time (interrupt) .
I think if you share your project it will be easyer for me to understand the whole thing.

Cheers.

Posted by i.makarov on 2015-12-28 08:19

Good day!
I start with STM32F4-DISCOVERY and CubeMX. First I write code that generate sinus using DMA and DAC.
This work good. Next I need to trancieve message throutgh USB when generation of sinus go.
CubeMX give USB_CDC library and I use it. Problem is when I create Transmit function and put it in main loop
generation of sinus not started but Tramsmit work properly.
What can you say about this?