topic Re: hardware bug？ in LPC Microcontrollers

hardware bug？

lpcware — Wed, 15 Jun 2016 17:51:56 GMT

Content originally posted in LPCWare by gjzxwht on Thu May 28 07:14:28 MST 2015
LPC1788 208
I2C0 for RTC,SPI for FALSH,hardware interrupt.
just I2C,is ok;just spi,is ok.
If i read RTC,and read data from flash through spi whiletime,i2c's state machine run wrong sometimes.
the I2C sequence of read RTC is:
1 send "start" ok ,the status of I2C0 is 0x08
2 send "slave addr+W" ok, the status is 0x18
3 send "addr" over, the status is 0x28,
4 send " Resart",most of time,the status is 0x10,and is right ,but maybe 0x28 occasionally.
-------
if i just resd RTC ,is ok.
who can tell me why?

Re: hardware bug？

lpcware — Wed, 15 Jun 2016 17:51:56 GMT

Content originally posted in LPCWare by rocketdawg on Thu May 28 11:55:43 MST 2015
need more info.
Do you have I2C pull up resistors?
you say I2C0 but not say which SPI?
please show the code where you set up pin configurations

Re: hardware bug？

lpcware — Wed, 15 Jun 2016 17:51:57 GMT

Content originally posted in LPCWare by gjzxwht on Thu May 28 22:25:05 MST 2015
I2C pull up resistors is ok
SPI is SPI1
program is in the attached file.
run FlashSaveChk() in flash.c quickly,i2c's state machine maybe wrong.
thank you very much!