Hello,
how does your ASM code look like ?
Vaclav
---------- Původní e-mail ----------
Od: Timo Fuckner <timo.fuck...@u-blox.com>
Komu: sdcc-user@lists.sourceforge.net <sdcc-user@lists.sourceforge.net>
Datum: 12. 10. 2017 14:26:24
Předmět: Re: [Sdcc-user] STM8L152C6 can not write to ADC registers
"Ok so I just removed the unnecessary stuff and created a minimal example:
https://pastebin.com/QPE14keu
Writing a 0x01 in ADC1_CR1 results on 0x00 when read out.
Regards,
Timo
-----Original Message-----
From: Timo Fuckner
Sent: Donnerstag, 12. Oktober 2017 12:40
To: sdcc-user@lists.sourceforge.net
Subject: [Sdcc-user] STM8L152C6 can not write to ADC registers
Hello everyone,
I am currently having trouble writing the controlling registers for the ADC
on STM8L152C6 (the discovery board [1]). Reading and writing the IO data and
control registers works fine, but I can't change anything in the ADC
registers as it seems, as they never change their RESET state. When reading
them directly after setting them and directing the output to uart, there is
no change. I'm not exactly sure if this is compiler or linker related, but
to the best of my knowledge I did everything according to the handbook [2].
The affected registers are:
ADC1_CR1
ADC1_CR2
ADC1_CR3
ADC1_SQR1
ADC1_SQR2
ADC1_SQR3
ADC1_SQR4
You can find my sourcecode here [3], SDCC version is 3.6, Win7.
The sdcc command is "sdcc -mstm8 --std-c99 usart.c".
For flashing I am using ST Visual Programmer 3.4.0.
I hope this is actually a bug in the compiler or linker and not a user
error, so I won't waste your time.
Regards,
Timo
[1] http://www.st.com/stm8l-discovery
[2] http://www.st.com/content/ccc/resource/technical/document/reference_
manual/2e/3b/8c/8f/60/af/4b/2c/CD00218714.pdf/files/CD00218714.pdf/jcr:
content/translations/en.CD00218714.pdf
[3] https://pastebin.com/sRSPSG58
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