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disable DSPICS3 (switch to GPIO) to avoid driving the PIN against FPGA

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blink attempts.
This commit is contained in:
Markus Fröschle
2014-11-24 16:06:38 +00:00
parent 2c7434e751
commit e579238035
1 changed files with 4 additions and 0 deletions
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4
BaS_gcc/tos/jtagwait/sources/jtagwait.c
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@@ -54,6 +54,10 @@ void wait_for_jtag(void)
MCF_GPIO_PDDR_FEC1L_PDDR_FEC1L4; /* bit 4 = LED => output */ MCF_GPIO_PDDR_FEC1L_PDDR_FEC1L4; /* bit 4 = LED => output */
/* all other bits = input */ /* all other bits = input */
/*
* configure DSPI_CS3 as GPIO input to avoid the MCU driving against the FPGA blink
*/
MCF_PAD_PAR_DSPI &= ~MCF_PAD_PAR_DSPI_PAR_CS3(MCF_PAD_PAR_DSPI_PAR_CS3_DSPICS3);
/* /*
* now that GPIO ports have been switched to input, we can poll for FPGA config * now that GPIO ports have been switched to input, we can poll for FPGA config
* started from the JTAG interface (CONF_DONE goes low) and finish (CONF_DONE goes high) * started from the JTAG interface (CONF_DONE goes low) and finish (CONF_DONE goes high)