Checked some more, %0 is in a register so mov should be used
"mov r0,%0 \n"
What is this code supposed to achive, generate a sequence of set/reset depending on scl variable, or simple set reset the pin ?
Are there specific timing requirements ?
Search found 94 matches
- Tue May 11, 2021 10:31 am
- Forum: Projects
- Topic: My minicomputer based on bluepill
- Replies: 7
- Views: 4370
- Tue May 11, 2021 9:42 am
- Forum: Projects
- Topic: My minicomputer based on bluepill
- Replies: 7
- Views: 4370
Re: My minicomputer based on bluepill
It is helpful to see the error messages. Second what are these videoDown and videoUp , macros or funtions ? Third in general the compiler mostly generates more efficient code than hand coded asm except in very special cases. There is usually more to gain by cleaning up the C code. Edit: "ldr r0...
- Mon May 10, 2021 10:15 am
- Forum: Projects
- Topic: STM32 GPSDO
- Replies: 57
- Views: 941449
Re: STM32 GPSDO
I dont quite understand how you measure the frequency and relates it to the GPS timing (1pps). Reading the code, briefly, it seems you are using the HSE as reference, not GPS ??
- Sat May 08, 2021 4:43 pm
- Forum: General discussion
- Topic: NUCLEO-F767ZI Code builds ok, uploads, but doesn't seem run
- Replies: 7
- Views: 3483
Re: NUCLEO-F767ZI Code builds ok, uploads, but doesn't seem run
Yes, was about to comment on the LTO setting, I have never used it and there has been reports of issues with that setting.
Great you are moving now.
Great you are moving now.
- Sat May 08, 2021 6:15 am
- Forum: General discussion
- Topic: NUCLEO-F767ZI Code builds ok, uploads, but doesn't seem run
- Replies: 7
- Views: 3483
Re: NUCLEO-F767ZI Code builds ok, uploads, but doesn't seem run
Should work, and the build settings for compiling the code ?
- Fri May 07, 2021 7:31 pm
- Forum: General discussion
- Topic: NUCLEO-F767ZI Code builds ok, uploads, but doesn't seem run
- Replies: 7
- Views: 3483
Re: NUCLEO-F767ZI Code builds ok, uploads, but doesn't seem run
We need to see the code of the simplest sketches you tested in order to say anything more to help. Also what is the board connected to ? Usually we start with "Hello World" and "Blinky" and "Serial Echo" before trying advanced web server to make sure everything basic is...
- Fri May 07, 2021 7:05 pm
- Forum: General discussion
- Topic: STM32 timer interrupt
- Replies: 6
- Views: 9335
Re: STM32 timer interrupt
Well timer interrupts are tricky stuff ... but reading the documentation surely helps ...
https://github.com/stm32duino/wiki/wiki ... er-library
https://github.com/stm32duino/wiki/wiki ... er-library
- Fri May 07, 2021 7:21 am
- Forum: Projects
- Topic: STM32 GPSDO
- Replies: 57
- Views: 941449
Re: STM32 GPSDO
Nice work, but the long term accuracy is not quite that easy, you must consider whether the clock is in PPS disciplined mode, in which case the long tern drift is equal to that of the GPS satellites, or if its in holdover mode, non disciplined ... thats another matter with temperature induced variat...
- Tue May 04, 2021 7:18 pm
- Forum: General discussion
- Topic: STM32 F407VET6 and BME280 I2C how to choose SDA and SCL pins?
- Replies: 14
- Views: 7026
Re: STM32 F407VET6 and BME280 I2C how to choose SDA and SCL pins?
But there is data returned from the BME is seems ?
Try just using the single BME280 sensor and print data through a serial console.
What board are you using ?
Try just using the single BME280 sensor and print data through a serial console.
What board are you using ?
- Tue May 04, 2021 4:25 pm
- Forum: General discussion
- Topic: Programming STM32L432 using Arduino IDE
- Replies: 3
- Views: 2521
Re: Programming STM32L432 using Arduino IDE
The Nucleo L432 has an onboard STLink making it possible, or even easy, to program.
The boot rom also has support for USB loading of flash. Both these methods are supported by
stmduino cores in Arduino IDE.
The boot rom also has support for USB loading of flash. Both these methods are supported by
stmduino cores in Arduino IDE.