ESP32 Webradio
Re: ESP32 Webradio
BuddyCasino wrote:Its going to be on Github as soon as I got it to work.
we did it in the meantime

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Re: ESP32 Webradio
Thats ok. I won't fret.
Re: ESP32 Webradio
Hi WiFive
Thanks for the hint - No no sign of an APLL enabled by that call. Parameter change did do something but not any thing deterministic - and still a lot of jitter on BCK
/j
Thanks for the hint - No no sign of an APLL enabled by that call. Parameter change did do something but not any thing deterministic - and still a lot of jitter on BCK

/j
Analog Digital IC designer / DevOps @ Merus Audio, Copenhagen, Denmark.
We do novel and best in class Audio amplifiers for consumer products.
Programmed assembler for C-64 back in 1980's, learned some electronics - hacking since then
We do novel and best in class Audio amplifiers for consumer products.
Programmed assembler for C-64 back in 1980's, learned some electronics - hacking since then
Re: ESP32 Webradio
Jakobsen wrote:Hi WiFive
Thanks for the hint - No no sign of an APLL enabled by that call. Parameter change did do something but not any thing deterministic - and still a lot of jitter on BCK
/j

perhabs you must change the register too:
cut from lib
rtc_clk.o rtc_xtal_32k_ena
rtc_clk.o rtc_8m_ena
rtc_clk.o rtc_plla_ena
rtc_clk.o rtc_set_slow_freq
rtc_clk.o rtc_set_fast_freq
rtc_clk.o rtc_bbpll_md
rtc_clk.o rtc_init_xtal_freq
rtc_clk.o rtc_get_xtal
rtc_clk.o rtc_apb_freq_up
rtc_clk.o rtc_uart_div_modify
rtc_clk.o rtc_uart_tx_wait_idle
rtc_clk.o rtc_set_cpu_freq
rtc_clk.o rtc_init_clk
rtc_clk.o rtc_init_clk_lite
perhabs it helps you
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love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
Re: ESP32 Webradio
my setup test was from 2.5 MHz do 154 MHz
each higher pos was more clear as the preview
example 2.5 MHz ( Jitter )
info for the choice of src of clock and register are in the technical docu too
hope this helps.
each higher pos was more clear as the preview
example 2.5 MHz ( Jitter )
Code: Select all
rtc_plla_ena(1, 0, 255, 0, 0); // 2.5MHz
info for the choice of src of clock and register are in the technical docu too
hope this helps.
-------------------------------------
love it, change it or leave it.
-------------------------------------
問候飛出去的朋友遍全球魯迪
love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
Re: ESP32 Webradio
yeap, WiFive is right.
316 kHz
you must play with the clk register itself too
and we must use the right src
there are many parameters possible, better we wait for the docu
we can stretch time too ( ? ! )
we can polarisation too ( ? ! )
we can invert too ( ? ! )
we can do more ( ? ! )
i think "my" setup was the best for 10MHz ..160 MHz
if we want smaller we need a fine tuning with other src by choice the right register.
best wishes
rudi
316 kHz
you must play with the clk register itself too
and we must use the right src
there are many parameters possible, better we wait for the docu
we can stretch time too ( ? ! )
we can polarisation too ( ? ! )
we can invert too ( ? ! )
we can do more ( ? ! )
i think "my" setup was the best for 10MHz ..160 MHz
if we want smaller we need a fine tuning with other src by choice the right register.
best wishes
rudi

Last edited by rudi ;-) on Tue Feb 28, 2017 11:08 pm, edited 1 time in total.
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love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
love it, change it or leave it.
-------------------------------------
問候飛出去的朋友遍全球魯迪
Re: ESP32 Webradio
played with the stretching and polarisation
same 316KHz
but :
5_10
6_10
8_10
with more playtime the jitter can be compensated
and there are differences with
-> DevKitC V1
-> DevKitC V2
-> DemoBoard V2
-> Wrover V1
-> Wrover V2
-> ...
i mean, the jitter make sig time delayed waved, perhabs a caps to much in the line?
.. i do not know .. i am
hardware hobbiest

same 316KHz
but :
5_10
6_10
8_10
with more playtime the jitter can be compensated
and there are differences with
-> DevKitC V1
-> DevKitC V2
-> DemoBoard V2
-> Wrover V1
-> Wrover V2
-> ...
i mean, the jitter make sig time delayed waved, perhabs a caps to much in the line?
.. i do not know .. i am
hardware hobbiest

-------------------------------------
love it, change it or leave it.
-------------------------------------
問候飛出去的朋友遍全球魯迪
love it, change it or leave it.
-------------------------------------
問候飛出去的朋友遍全球魯迪
Re: ESP32 Webradio
Jakobsen wrote:
O yes - need more coffee - i did commit - as I use to on SVN but i see there is more to it then that.
I will try to follow you description tonight and have added git to my bucket list.
Any progress?
BuddyCasino wrote:Its going to be on Github as soon as I got it to work.
Any progress
Where are you stuck
best wishes
rudi

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love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
love it, change it or leave it.
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問候飛出去的朋友遍全球魯迪
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