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ARM: take care of system startup status. 

Not much to do, still it was necessary to review this topic.
This commit is contained in:
Markus Hitter 2015-08-12 15:34:27 +02:00
parent 2376242c36
commit 9c29665a72
1 changed files with 13 additions and 0 deletions
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13
cpu-arm.c
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@ -7,7 +7,20 @@
#if defined TEACUP_C_INCLUDE && defined __ARMEL__ #if defined TEACUP_C_INCLUDE && defined __ARMEL__
#include "config_wrapper.h"
void cpu_init() { void cpu_init() {
/**
Other than on ATmegas, the LPC11xx disables all peripherals except GPIO
and SPI0 on reset. Brown Out detector is set to kick in at 1.46 V, without
causing a reset. See chapter 3.5.14 in the LPC11xx User Manual.
GPIO is needed in all configurations, so we just turn off SPI0 if not
needed.
*/
#ifndef SPI
LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 11);
#endif
} }
#endif /* defined TEACUP_C_INCLUDE && defined __ARMEL__ */ #endif /* defined TEACUP_C_INCLUDE && defined __ARMEL__ */