riot-ci/RIOT
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Merge pull request #2052 from Troels51/samr21-cpuid

Browse Source 
Samr21: cpuid implementation
This commit is contained in:
Thomas Eichinger 2015-01-12 16:10:59 +01:00
commit 61f3060d88
3 changed files with 42 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
boards/samr21-xpro/Makefile.features
View File

@ -1 +1 @@
FEATURES_PROVIDED += transceiver periph_gpio periph_spi cpp periph_timer periph_uart periph_i2c cpp periph_rtc
FEATURES_PROVIDED += transceiver periph_gpio periph_spi cpp periph_timer periph_uart periph_i2c cpp periph_rtc periph_cpuid

4
cpu/samd21/include/cpu-conf.h
View File

@ -55,5 +55,9 @@ extern "C" {
}
#endif
/**
* @brief CPUID_ID_LEN length of cpuid in bytes
*/
#define CPUID_ID_LEN (16) /* 128 bits long, 16 bytes long */
#endif /* __CPU_CONF_H */
/** @} */

37
cpu/samd21/periph/cpuid.c Normal file
View File

@ -0,0 +1,37 @@
/*
* Copyright (C) 2014 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @addtogroup driver_periph
* @{
*
* @file cpuid.c
* @brief Low-level CPUID driver implementation
*
* @author Troels Hoffmeyer <troels.d.hoffmeyer@gmail.com>
*/
#include <string.h>
#include "cpu-conf.h"
#include "periph/cpuid.h"
#define SAMD21_CPUID_WORD0 (*(volatile uint32_t *)0x0080A00C)
#define SAMD21_CPUID_WORD1 (*(volatile uint32_t *)0x0080A040)
#define SAMD21_CPUID_WORD2 (*(volatile uint32_t *)0x0080A044)
#define SAMD21_CPUID_WORD3 (*(volatile uint32_t *)0x0080A048)
void cpuid_get(void *id)
{
uint32_t source_address[] = { SAMD21_CPUID_WORD0,
SAMD21_CPUID_WORD1,
SAMD21_CPUID_WORD2,
SAMD21_CPUID_WORD3};
memcpy(id, (void*) source_address, CPUID_ID_LEN);
}