MicroPython Forum (Archive)

I am attempting to use Firmware updat 1.14, after having been out of Micropython for a while. I am using a board that was previously used on firmware 1.9.3 and worked fine. however after creating a new board folder and using the PYBV11 files, with a few mods it compiles and runs, I am unable to acce...

I am wondering if there is a way to show the block device mounted in boot or main to show as a mounted drive in windows? I have internal flash, and when connected the SD card is shown in windows but using a flash device I am able to mount and use the mem as a drive on the pyb This however is not sho...

That did the trick, I didn't realize that the readblocks was a block address not a full byte address aligned to the pages. Once I shifted to the full byte address it works.

Thanks, just missed that on the details thanks.

I was able to fix this issue by reducing the number of bytes written/read at one time I segmented the the read/writes over spi to 256 byte segments.

So I modified the driver. I have tested with a blockread and block write, it will read an write the given data correctly I do assume that it will not read/write blocks over 131,072 bytes at a time. uos mount is still failing as well as pyb.mount. page size is 512 >>> import uos >>> uos.VfsFat.mkfs(f...

So after a bit of review on spi i was able to find a post (https://github.com/micropython/micropython/issues/685) specifies Therefore, the SPI send/recv/send_recv methods will choose to use DMA if it detects that interrupts are enabled at that point, otherwise it uses the original polling transfers....

Thanks that helps with another question I was having as to whether the uos uses the CCRAM on STM or not.

def readblocks(self,block_num,buf): try: cmd=bytearray(1) cmd[0] = fourread cmd.extend(self.block_to_bytes(self._baseoffsett+block_num *self._block_size)) #print('read cmd {}'.format(list(cmd))) self._cs.low() time.sleep_us(1) self._port.send(cmd) 107** self._port.readinto(buf) self._cs.high() exce...

Thanks for the help after digging into this for a while the mkfs doesn't seem to be actually making any changes to the sectors on the drive. I am wondering if it has to do with the line. line 5144 in oofatfs/ff.c if (sz_vol < 50) return FR_MKFS_ABORTED; /* Check if volume size is >=50s */ but not su...

I am having an issue with read write to mem locations. import uctypes ba=uctypes.bytearray_at(0x10000000,65536) flash_ic=flash_drv.flash(icport,flash_cs) flash_ic.readblocks(0,ba) Basically i have a SPI port with IC attached that is read write in blocks of 64Kb I am attempting to use the CCRAM on a ...