Hi,
I am trying to interface WM8960 CODEC with nRF52832 using (I2S and I2C) .
Problem I am having is with TWI scanner and also sending data to the know i2c address . have error code of 1
but as same board . testing with Arduino uno and STM32 boards . the twi scanning gives me result 0x1a (7 bit address)
i am not know why nRF doesn't read the CODEC module address
Hi,
Have you checked the connections to the I2C device is correct, and that it is powered correctly? Which GPIOs are you using for SCL/SDA?
What is the supply voltage of the I2C device? Arduino uno and STM32 may support 5V level when interfacing I2C devices, but nRF52832 may not support this when running at 3V supply or lower.
Can you provide a logic trace of the TWI bus?
Best regards,
Jørgen
Anything i have missed Jørgen
Sounds like it should work then.
Did you change the configuration in the TWI Scanner when adding the "sending data to the know i2c address" part? Did you try the unmodified example?
Can you provide a logic trace of the TWI bus?
This is the code which i used
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/** @file
* @defgroup tw_scanner main.c
* @{
* @ingroup nrf_twi_example
* @brief TWI Sensor Example main file.
*
* This file contains the source code for a sample application using TWI.
*
*/
#include <stdio.h>
#include "boards.h"
#include "app_util_platform.h"
#include "app_error.h"
#include "nrf_drv_twi.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
/* TWI instance ID. */
#if TWI0_ENABLED
#define TWI_INSTANCE_ID 0
#elif TWI1_ENABLED
#define TWI_INSTANCE_ID 1
#endif
/* Number of possible TWI addresses. */
#define TWI_ADDRESSES 127
/* TWI instance. */
static const nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID);
/**
* @brief TWI initialization.
*/
void twi_init (void)
{
ret_code_t err_code;
const nrf_drv_twi_config_t twi_config = {
.scl = ARDUINO_SCL_PIN,
.sda = ARDUINO_SDA_PIN,
.frequency = NRF_DRV_TWI_FREQ_100K,
.interrupt_priority = APP_IRQ_PRIORITY_HIGH,
.clear_bus_init = false
};
err_code = nrf_drv_twi_init(&m_twi, &twi_config, NULL, NULL);
APP_ERROR_CHECK(err_code);
nrf_drv_twi_enable(&m_twi);
}
#define WM8960_ADDRESS 0x1a
#define DMA_MAX_SZE 0xFFFF
#define DMA_MAX(x) (((x) <= 0xFFFF)? (x):0xFFFF)
#define AUDIODATA_SIZE 2 /* 16-bits audio data size */
#define AUIDO_START_ADDRESS 58 /* Offset relative to audio file header size */
uint32_t AudioTotalSize; /* This variable holds the total size of the audio file */
uint32_t AudioRemSize; /* This variable holds the remaining data in audio file */
uint16_t *CurrentPos; /* This variable holds the current position of audio pointer */
uint32_t WaveDataLength=0;
uint8_t XferCplt;
//resgister value
static uint16_t WM8960_REG_VAL[56] =
{
0x0097, 0x0097, 0x0000, 0x0000, 0x0000, 0x0008, 0x0000, 0x000A,
0x01C0, 0x0000, 0x00FF, 0x00FF, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x007B, 0x0100, 0x0032, 0x0000, 0x00C3, 0x00C3, 0x01C0,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0100, 0x0100, 0x0050, 0x0050, 0x0050, 0x0050, 0x0000, 0x0000,
0x0000, 0x0000, 0x0040, 0x0000, 0x0000, 0x0050, 0x0050, 0x0000,
0x0000, 0x0037, 0x004D, 0x0080, 0x0008, 0x0031, 0x0026, 0x00ED
};
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/**
* @brief Write register of WM8960.
* @param reg: The number of resigter which to be read.
* @param dat: The data which will be writeen to the register.
* @retval The value of regsiter.
*/
uint8_t WM8960_Write_Reg(uint8_t reg, uint16_t dat) {
uint8_t res,I2C_Data[2];
I2C_Data[0] = (reg<<1)|((uint8_t)((dat>>8)&0x0001)); //RegAddr
I2C_Data[1] = (uint8_t)(dat&0x00FF); //RegValue
res = nrf_drv_twi_tx(&m_twi,(WM8960_ADDRESS<<1),I2C_Data,2,false);
//res = HAL_I2C_Master_Transmit(&hi2c1,(WM8960_ADDRESS<<1),I2C_Data,2,10);
if(res == NRF_SUCCESS)
WM8960_REG_VAL[reg] = dat;
return res;
}
/**
* @brief Read register of WM8960.
* @param reg: The number of resigter which to be read.
* @retval The value of regsiter.
*/
uint16_t WM8960_Read_Reg(uint8_t reg) {
return WM8960_REG_VAL[reg];
}
/**
* @brief Initialize WM8960 device.
* @param None
* @retval None
*/
uint8_t WM89060_Init(void) {
uint8_t res;
//Reset Device
res = WM8960_Write_Reg(0x0f, 0x0000);
if(res != 0)
return res;
else
printf("WM8960 reset completed !!\r\n");
//Set Power Source
res = WM8960_Write_Reg(0x19, 1<<8 | 1<<7 | 1<<6);
res += WM8960_Write_Reg(0x1A, 1<<8 | 1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<3);
res += WM8960_Write_Reg(0x2F, 1<<3 | 1<<2);
if(res != 0) {
printf("Source set fail !!\r\n");
printf("Error code: %d\r\n",res);
return res;
}
//Configure clock
//MCLK->div1->SYSCLK->DAC/ADC sample Freq = 25MHz(MCLK)/2*256 = 48.8kHz
WM8960_Write_Reg(0x04, 0x0000);
//Configure ADC/DAC
WM8960_Write_Reg(0x05, 0x0000);
//Configure audio interface
//I2S format 16 bits word length
WM8960_Write_Reg(0x07, 0x0002);
//Configure HP_L and HP_R OUTPUTS
WM8960_Write_Reg(0x02, 0x006F | 0x0100); //LOUT1 Volume Set
WM8960_Write_Reg(0x03, 0x006F | 0x0100); //ROUT1 Volume Set
//Configure SPK_RP and SPK_RN
WM8960_Write_Reg(0x28, 0x007F | 0x0100); //Left Speaker Volume
WM8960_Write_Reg(0x29, 0x007F | 0x0100); //Right Speaker Volume
//Enable the OUTPUTS
WM8960_Write_Reg(0x31, 0x00F7); //Enable Class D Speaker Outputs
//Configure DAC volume
WM8960_Write_Reg(0x0a, 0x00FF | 0x0100);
WM8960_Write_Reg(0x0b, 0x00FF | 0x0100);
//3D
// WM8960_Write_Reg(0x10, 0x001F);
//Configure MIXER
WM8960_Write_Reg(0x22, 1<<8 | 1<<7);
WM8960_Write_Reg(0x25, 1<<8 | 1<<7);
//Jack Detect
WM8960_Write_Reg(0x18, 1<<6 | 0<<5);
WM8960_Write_Reg(0x17, 0x01C3);
WM8960_Write_Reg(0x30, 0x0009);//0x000D,0x0005
return 0;
}
/**
* @brief Function for main application entry.
*/
int main(void)
{
ret_code_t err_code;
uint8_t address;
uint8_t sample_data;
bool detected_device = false;
APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
NRF_LOG_DEFAULT_BACKENDS_INIT();
NRF_LOG_INFO("TWI scanner started.");
NRF_LOG_FLUSH();
twi_init();
for (address = 1; address <= TWI_ADDRESSES; address++)
{
err_code = nrf_drv_twi_rx(&m_twi, (address<<1), &sample_data, sizeof(sample_data));
if (err_code == NRF_SUCCESS)
{
detected_device = true;
NRF_LOG_INFO("TWI device detected at address 0x%x.", address);
}
NRF_LOG_FLUSH();
}
if (!detected_device)
{
NRF_LOG_INFO("No device was found.");
NRF_LOG_FLUSH();
}
int res = WM89060_Init();
if(res == 0) {
NRF_LOG_INFO("WM89060_Init complete !!\r\n");
}
else {
NRF_LOG_INFO("WM89060_Init fail ! Error code: %d\r\n", res);
}
NRF_LOG_FLUSH();
}
/** @} */
i want to setup the scope . i will setup and send you the traces
I'm not sure why you added a shift in the address, but if I revert your code back to "err_code = nrf_drv_twi_rx(&m_twi, address, &sample_data, sizeof(sample_data))", I'm able to correctly detect another I2C sensor.
If you are not able to detect your sensor with this code, there is either something wrong with the sensor/connections/logic levels/etc, or in your project configuration.
I'm not sure why you added a shift in the address, but if I revert your code back to "err_code = nrf_drv_twi_rx(&m_twi, address, &sample_data, sizeof(sample_data))", I'm able to correctly detect another I2C sensor.
If you are not able to detect your sensor with this code, there is either something wrong with the sensor/connections/logic levels/etc, or in your project configuration.
Yes, Usually I tried without shift address but no response in the twi line
i have checked with reference of STM code where the same codec board gets scanned and also able to bring up the codec module.
I can say that CODEC board works perfect . we can check the logic trace
what about project configuration . i am using the default TWI SCANNER project configuration
Hi,
I have checked with the logic analyzer i got result like this
I hope you will have the software
I looked at the logic trace, and it seems to correctly setup a read on address 0x1A, which should be the address of the WM8960. However, there is no ACK from the slave, which is why you can't detect it from the code.
If you are sure that this is the correct address, you may want to remove the other addresses, and check only this address with a scope, to look at the voltage levels, etc. You may also want to compare the scope image from the nRF with scope images from the working communication on the Arduino/STM32.
Hi Jørgen,
I have tested and in twi scanner it is not responding. and If i tried to write the data with the given format the i2c line works.
Have you work with this WM8960 CODEC module
I am trying to connect I2S line to tap audio from MIC and transmit to speaker.
Previously i worked with I2S for NEOPIXEL where i have connect only the SDIN pin
But here i found
WS,I2S_CLK, SDIN, SDOUT
in WM8960 i found WS,CLK, TXSDA, RXSDA.
I am confusing with pin connection to tap audio signal and also i need to generate audio to the speaker so. as like NEOPIXEL i just need to connect only SDIN to the TXSDA ?
I have not worked with WM8960 before, so I can't comment on how to use this apart from interfacing from the nRF52. You should contact the manufacturer of the device regarding how to use it.
If it supports both recording audio from mic and playing audio on speaker, you need to connect both SDIN and SDOUT pins.
I2S is not intended for use with NEOPIXEL, it is just possible to make the I2S peripheral output signals that can control the NEOPIXEL by connecting the SDOUT pin. When using I2S for audio, WS (LRCK), CLK, and SD pin is required.