Hi Matt I know that and I tried it before I wanted to write an array to the SD card. It works perfect. The problem is how to write an array to the SD card.
Regards, Peter > Op 21 feb. 2023 om 00:21 heeft Matthew Schinkel <[email protected]> > het volgende geschreven: > > Hi, have you tried another sd card? What PIC are you using? > > Please try example 3 in the sample > > ; > -------------------------------------------------------------------------------- > ; -- EXAMPLE #3 write to 2 sectors using a sector buffer at a address > ; -- user friendly and fastest. > ; > -------------------------------------------------------------------------------- > ; -- fill the sector buffer with data > ; for 512 using step1 loop -- loop till the end of the > sector buffer > ; sd_sector_buffer[step1] = "B" -- set each byte of data > ; end loop > ; -- write the sector buffer to sector 20 > ; sd_write_sector_address(20) > ; for 512 using step1 loop -- loop till the end of the > sector buffer > ; sd_sector_buffer[step1] = "C" -- set each byte of data > ; end loop > ; -- write the sector buffer to sector 21 > ; sd_write_sector_address(21) > ; -- > ; -- read back the same sectors > ; -- read sector 20 into the sector buffer > ; sd_read_sector_address(20) > ; -- now send it to the serial port > ; for 512 using step1 loop -- loop till the end of the > sector buffer > ; serial_write (sd_sector_buffer[step1]) -- send each byte via serial > port > ; end loop > ; -- read sector 21 into the sector buffer > ; sd_read_sector_address(21) > ; -- now send it to the serial port > ; for 512 using step1 loop -- loop till the end of the > sector buffer > ; serial_write (sd_sector_buffer[step1]) -- send each byte via serial > port > ; end loop > > Matt. > >> On Monday, February 20, 2023 at 12:12:04 PM UTC-5 [email protected] wrote: >> Hi Matt >> I think this is a question for you. You made a beautiful sample for writing >> to a sd card. >> Every start of the program I use the part of your lib to control the >> connection to the sd card. >> I can write and read the sd card byte for byte. I use a bitmap image of >> Marilyn Monroe of 504 bytes. >> >> The half of the next program works perfect: >> var byte gegeven >> var byte data >> var word step1 >> var word teller >> >> sd_start_write(50) >> for count(marilyn) using teller loop >> sd_data_byte = marilyn[teller] >> end loop >> sd_stop_write >> This works perfect. >> >> >> I also tried to write to the sd card with a 'sector buffer' because most >> arrays are larger. >> But first the array of Marilyn. It can be written in one sector. >> Attempt 1: >> print_string(serial_data, "Writing to sector 100") >> print_crlf(serial_data) >> >> sd_start_write(100) >> --fill the sector buffer >> for 512 using teller loop >> sd_sector_buffer[teller] = marilyn[teller] >> end loop >> -- write the sector buffer to sector 100 >> sd_write_sector_address(100) >> sd_stop _write >> >> I also tried: >> Attempt 2: >> >> sd_start_write(150) >> for 512 using step1 loop >> gegeven = marilyn[step1] >> sd_sector_buffer[step1] = gegeven >> end loop >> -- write the sector buffer to the sd card >> sd_write_sector() >> sd_stop _write >> >> Both attempts does not work. >> I get rubbish when I read the sectors. >> Can you tell me how I get it working. >> >> Regards, >> Peter >> > > -- > You received this message because you are subscribed to a topic in the Google > Groups "jallib" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/jallib/I1L0r6P-2xQ/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jallib/8415623e-2bbb-424c-9498-cd9b3c3b651cn%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/84ED0AE4-EC81-4EE4-A8AE-22B1B9D2B8B6%40gmail.com.
