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bright
Joined: 24 Apr 2011
Posts: 14
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| problem with the SPI_write() |
 Posted: Tue May 03, 2011 5:10 am |
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| I am using spi to interface my nRF905 with the PIC16f690 microcontoller, I am using MPLAB SIM to see what is happening inside my code. Now my problem is that when I reach the line: spi_write(0xFF); it does not continue to the next line, it is if the spi_write() is an infinite loop. Please help. |
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temtronic
Joined: 01 Jul 2010
Posts: 9245
Location: Greensville,Ontario
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| Posted: Tue May 03, 2011 5:25 am |
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| You'll have to post a small, complete program with PIC type and compiler version to get any help here. the old crystal ball can't see the whole picture ! As well what is an 'nRF905' ? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue May 03, 2011 11:01 am |
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| Quote: | When I reach the line: spi_write(0xFF); it does not continue to the
next line, it is if the spi_write() is an infinite loop.
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Go to MPLAB Help / Topics / MPSIM.
Then look in this section: Limitations / General Limitations
It says:
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For devices with the listed peripherals, these peripherals are NOT supported:
Serial I/O (i.e., SSP including I2C and SPI). As a result, the SSPSTAT register has been made readable and writable.
Note: You can use stimulus to emulate many of the signals of SPI and have firmware read data as if it was SPI.
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