Replies: 7 comments 8 replies
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That DAC (the WM8978) requires an MCLK, so using GPIO0 was mandatory. I don't know for WM8960, you should check the datasheet but it might very well be the same. Attach a log as well. |
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Thank you for your help. First, I added mclk in dac_config: MCLK: There is NO clock at GPIO0 The mcu will not start. Here is the log: Then, I changed mclk to 1 in dac_config: Here is the log: Last, I changed mclk to 2 in dac_config: MCLK: There is NO clock at GPIO2 Here is the log: |
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Per log, i2c using gpio 13 and 12 does not work. I don't remember but I think one of these is reserved in case of QuadSPI Flash + SPIRAM |
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Hi, philippe44. Here is my new config now: And there is the log: |
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ok - I looked at the datasheet. These 2 have a totally different registers structure and are not at the same i2c address, so the WM8978 driver will not work. The 8960 sits at 34h but the 8978 is at 16h. In addition, they have a unique non-standard way to write to i2c that I'm not sure can be replicated by using the generic dac_controlset (7 bits of address and 9 bits of data). Have a look at the doc here and see if you can make it work with dac_controlset and the generic i2c. You might be able to, but you'll have to cheat with dac_controlset where upper "reg" part must contain the 7 bits of the register and its least significant bit (b0) is the b7 of the value. In other works, if you want to write 257 at register 32,
You have to shift left 32 by 1 = (0010 0000 << 1) = (0100 0000) = 64 So write in dac_controlset (65, 1) Good luck! NB: I did not make that DAC 😄 |
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Thank you for your time and response. I haven't dealt with the I2C initialization commands for a DAC before, in fact, I haven't worked with I2C commands at all. I need to study the documentation thoroughly. Could you provide an example of initializing the WM8978 using the 'dac_controlset'? I'd like to see if I can learn from it. |
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I don't have such example, but here is the ES8388 code currently embedded. Look at the README as well |
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That is initilizing code. What if we need volume or sampling rate, etc.?
And what is usage of BYTES_PER_FRAME?
Thanks
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On Nov 7, 2023, at 1:09 p.m., philippe44 ***@***.******@***.***>> wrote:
I don't have such example, but here is the ES8388 code currently embedded
{ "es8388", true,
"{\"init\":[ \
{\"reg\":8,\"val\":0}, {\"reg\":2,\"val\":243}, {\"reg\":43,\"val\":128}, {\"reg\":0,\"val\":5}, \
{\"reg\":1,\"val\":64}, {\"reg\":4,\"val\":60},"
#if BYTES_PER_FRAME == 8
"{\"reg\":23,\"val\":32},"
#else
"{\"reg\":23,\"val\":24},"
#endif
"{\"reg\":24,\"val\":2}, \
{\"reg\":26,\"val\":0}, {\"reg\":27,\"val\":0}, {\"reg\":25,\"val\":50}, {\"reg\":38,\"val\":0}, \
{\"reg\":39,\"val\":184}, {\"reg\":42,\"val\":184}, {\"reg\":46,\"val\":30}, {\"reg\":47,\"val\":30}, \
{\"reg\":48,\"val\":30}, {\"reg\":49,\"val\":30}, {\"reg\":2,\"val\":170}]}" },
{ NULL, false, NULL }
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ah, forget the #ifdef, it's because I copy/paste some C code (I've edited it). It does not make sense in dac_controlset you set using the webUI. For other commands, please look at README https://github.com/sle118/squeezelite-esp32#daci2s. Volume is never controlled by DAC (soft volume only) and sampling rate is automatic, you don't need to set it up. |
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I see.
I am going to study the usage.
Thank you.
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On Nov 7, 2023, at 3:30 p.m., philippe44 ***@***.******@***.***>> wrote:
ah, forget the #ifdef, it's because I copy/paste some C code. It does not make sense in dac_controlset you set using the webUI. For other commands, please look at README https://github.com/sle118/squeezelite-esp32#daci2s.
Volume is never controlled by DAC (soft volume only) and sampling rate is automatic, you don't need to set it up.
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Hi philippe44,
For WM8960 Here is the Pin Assignments: Does this mean that I have two I2C buses, 18/19 and 22/23? Or, should I connect both of them to 22/23?
I just started to learn I2C, I know it is too basic for you. My board is Waveshare WM8960 Stereo CODEC General purpose module. |
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The doc is a bit confusing about that and that's also the result of some old code I did a long time ago. But at the core, the i2c driver from espressif is not thread safe so you can't use the same port from multiple tasks and that's the reason why I initially reserved port 0 for the DAC and 1 for the rest. Well ... I've never revisited that and it's true that i2c port 1 is used by display and gpio expander without protection. This is something I should fix one of these days. But basically if you use the same port for dac and display, you can, but you will have risk of conflict. Rare because the i2c on the dac is rarely used, but still, the i2c on display with a highly used, so ... |
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Through what you just said, I have a bit of understanding. Can it be interpreted like this: port 0 is equivalent to I2C bus 0, and port 1 is equivalent to bus 1? Thanks |
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did you set port for the i2c_config? |
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Here is the dac_config: And i2c_config: |
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Hi,
I have a WM8960 Audio Board, and I initially thought it would be similar to the WM8978.
So, my dac_config is set as follows:
bck=14, ws=27, do=26, model=WM8978, sda=13, scl=12
However, I'm not getting any sound.
Does anyone have experience with this board?
Here is the audio board and ESP32-Wrover-cam
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