109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
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/** @file micro.c
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* @brief STM32W108 micro specific minimal HAL functions
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*
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*
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* <!--(C) COPYRIGHT 2010 STMicroelectronics. All rights reserved. -->
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*/
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#include PLATFORM_HEADER
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#include "error.h"
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#include "hal/micro/micro-common.h"
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#include "hal/micro/cortexm3/micro-common.h"
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#include "micro/system-timer.h"
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#include "micro/adc.h"
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#include <stdlib.h>
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#include <string.h>
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void halInit(void)
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{
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//Disable the REG_EN external regulator enable signal. Out of reset this
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//signal overrides PA7. By disabling it early, PA7 is reclaimed as a GPIO.
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//If an external regulator is required, the following line of code should
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//be deleted.
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GPIO_DBGCFG &= ~GPIO_EXTREGEN;
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halInternalSetRegTrim(FALSE);
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halPowerUp();
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halInternalCalibrateFastRc();
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#ifndef DISABLE_WATCHDOG
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halInternalEnableWatchDog();
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#endif
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halInternalStartSystemTimer();
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}
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void halReboot(void)
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{
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INTERRUPTS_OFF();
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//FCLK must be 6MHz to allow the SYSRESETREQ signal to cleanly
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//propagate and reset the chip. Switch SYSCLK first since we need
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//the cycles used by switching FCLK to guarantee the SYSCLK is
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//stable and ready for SYSRESETREQ.
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OSC24M_CTRL = OSC24M_CTRL_RESET; //Guarantee SYSCLK is sourced from OSCHF
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CPU_CLKSEL = CPU_CLKSEL_RESET; //Guarantee FCLK is sourced from PCLK
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SCS_AIRCR = (0x05FA0000 | SCS_AIRCR_SYSRESETREQ); // trigger the reset
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//NOTE: SYSRESETREQ is not the same as nRESET. It will not do the debug
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//pieces: DWT, ITM, FPB, vector catch, etc
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}
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void halPowerDown(void)
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{
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}
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void halPowerUp(void)
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{
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halInternalInitAdc();
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halCommonCalibratePads();
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halInternalSwitchToXtal();
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}
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static int16u seed0 = 0xbeef;
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static int16u seed1 = 0xface;
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void halCommonSeedRandom(int32u seed)
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{
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seed0 = (int16u) seed;
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if (seed0 == 0)
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seed0 = 0xbeef;
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seed1 = (int16u) (seed >> 16);
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if (seed1 == 0)
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seed1 = 0xface;
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}
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static int16u shift(int16u *val, int16u taps)
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{
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int16u newVal = *val;
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if (newVal & 0x8000)
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newVal ^= taps;
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*val = newVal << 1;
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return newVal;
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}
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int16u halCommonGetRandom(void)
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{
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return (shift(&seed0, 0x0062)
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^ shift(&seed1, 0x100B));
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}
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void halCommonMemCopy(void *dest, const void *source, int8u bytes)
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{
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memcpy(dest, source, bytes);
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}
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int8s halCommonMemCompare(const void *source0, const void *source1, int8u bytes)
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{
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return memcmp(source0, source1, bytes);
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}
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void halCommonMemSet(void *dest, int8u val, int16u bytes)
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{
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memset(dest, val, bytes);
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}
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