mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_system.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
188:bcfe06ba3d64 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /***************************************************************************//**
<> 149:156823d33999 2 * @file em_system.c
<> 149:156823d33999 3 * @brief System Peripheral API
AnnaBridge 179:b0033dcd6934 4 * @version 5.3.3
<> 149:156823d33999 5 *******************************************************************************
AnnaBridge 179:b0033dcd6934 6 * # License
<> 150:02e0a0aed4ec 7 * <b>Copyright 2016 Silicon Laboratories, Inc. http://www.silabs.com</b>
<> 149:156823d33999 8 *******************************************************************************
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Permission is granted to anyone to use this software for any purpose,
<> 149:156823d33999 11 * including commercial applications, and to alter it and redistribute it
<> 149:156823d33999 12 * freely, subject to the following restrictions:
<> 149:156823d33999 13 *
<> 149:156823d33999 14 * 1. The origin of this software must not be misrepresented; you must not
<> 149:156823d33999 15 * claim that you wrote the original software.
<> 149:156823d33999 16 * 2. Altered source versions must be plainly marked as such, and must not be
<> 149:156823d33999 17 * misrepresented as being the original software.
<> 149:156823d33999 18 * 3. This notice may not be removed or altered from any source distribution.
<> 149:156823d33999 19 *
<> 149:156823d33999 20 * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
<> 149:156823d33999 21 * obligation to support this Software. Silicon Labs is providing the
<> 149:156823d33999 22 * Software "AS IS", with no express or implied warranties of any kind,
<> 149:156823d33999 23 * including, but not limited to, any implied warranties of merchantability
<> 149:156823d33999 24 * or fitness for any particular purpose or warranties against infringement
<> 149:156823d33999 25 * of any proprietary rights of a third party.
<> 149:156823d33999 26 *
<> 149:156823d33999 27 * Silicon Labs will not be liable for any consequential, incidental, or
<> 149:156823d33999 28 * special damages, or any other relief, or for any claim by any third party,
<> 149:156823d33999 29 * arising from your use of this Software.
<> 149:156823d33999 30 *
<> 149:156823d33999 31 ******************************************************************************/
<> 149:156823d33999 32
<> 149:156823d33999 33 #include "em_system.h"
<> 149:156823d33999 34 #include "em_assert.h"
<> 150:02e0a0aed4ec 35 #include <stddef.h>
<> 149:156823d33999 36
<> 149:156823d33999 37 /***************************************************************************//**
<> 150:02e0a0aed4ec 38 * @addtogroup emlib
<> 149:156823d33999 39 * @{
<> 149:156823d33999 40 ******************************************************************************/
<> 149:156823d33999 41
<> 149:156823d33999 42 /***************************************************************************//**
<> 149:156823d33999 43 * @addtogroup SYSTEM
<> 149:156823d33999 44 * @{
<> 149:156823d33999 45 ******************************************************************************/
<> 149:156823d33999 46
<> 149:156823d33999 47 /*******************************************************************************
<> 149:156823d33999 48 ************************** GLOBAL FUNCTIONS *******************************
<> 149:156823d33999 49 ******************************************************************************/
<> 149:156823d33999 50
<> 149:156823d33999 51 /***************************************************************************//**
<> 149:156823d33999 52 * @brief
<> 149:156823d33999 53 * Get chip major/minor revision.
<> 149:156823d33999 54 *
<> 149:156823d33999 55 * @param[out] rev
<> 149:156823d33999 56 * Location to place chip revision info.
<> 149:156823d33999 57 ******************************************************************************/
<> 149:156823d33999 58 void SYSTEM_ChipRevisionGet(SYSTEM_ChipRevision_TypeDef *rev)
<> 149:156823d33999 59 {
<> 149:156823d33999 60 uint8_t tmp;
<> 149:156823d33999 61
<> 149:156823d33999 62 EFM_ASSERT(rev);
AnnaBridge 179:b0033dcd6934 63
<> 149:156823d33999 64 /* CHIP FAMILY bit [5:2] */
AnnaBridge 188:bcfe06ba3d64 65 tmp = (((ROMTABLE->PID1 & _ROMTABLE_PID1_FAMILYMSB_MASK) >> _ROMTABLE_PID1_FAMILYMSB_SHIFT) << 2);
<> 149:156823d33999 66 /* CHIP FAMILY bit [1:0] */
AnnaBridge 188:bcfe06ba3d64 67 tmp |= ((ROMTABLE->PID0 & _ROMTABLE_PID0_FAMILYLSB_MASK) >> _ROMTABLE_PID0_FAMILYLSB_SHIFT);
<> 149:156823d33999 68 rev->family = tmp;
<> 149:156823d33999 69
<> 149:156823d33999 70 /* CHIP MAJOR bit [3:0] */
AnnaBridge 188:bcfe06ba3d64 71 rev->major = (ROMTABLE->PID0 & _ROMTABLE_PID0_REVMAJOR_MASK) >> _ROMTABLE_PID0_REVMAJOR_SHIFT;
<> 149:156823d33999 72
<> 149:156823d33999 73 /* CHIP MINOR bit [7:4] */
AnnaBridge 188:bcfe06ba3d64 74 tmp = (((ROMTABLE->PID2 & _ROMTABLE_PID2_REVMINORMSB_MASK) >> _ROMTABLE_PID2_REVMINORMSB_SHIFT) << 4);
<> 149:156823d33999 75 /* CHIP MINOR bit [3:0] */
AnnaBridge 188:bcfe06ba3d64 76 tmp |= ((ROMTABLE->PID3 & _ROMTABLE_PID3_REVMINORLSB_MASK) >> _ROMTABLE_PID3_REVMINORLSB_SHIFT);
<> 149:156823d33999 77 rev->minor = tmp;
<> 149:156823d33999 78 }
<> 149:156823d33999 79
<> 149:156823d33999 80 /***************************************************************************//**
<> 149:156823d33999 81 * @brief
<> 149:156823d33999 82 * Get factory calibration value for a given peripheral register.
<> 149:156823d33999 83 *
<> 149:156823d33999 84 * @param[in] regAddress
<> 150:02e0a0aed4ec 85 * Peripheral calibration register address to get calibration value for. If
<> 150:02e0a0aed4ec 86 * a calibration value is found then this register is updated with the
<> 150:02e0a0aed4ec 87 * calibration value.
<> 149:156823d33999 88 *
<> 149:156823d33999 89 * @return
<> 150:02e0a0aed4ec 90 * True if a calibration value exists, false otherwise.
<> 149:156823d33999 91 ******************************************************************************/
<> 150:02e0a0aed4ec 92 bool SYSTEM_GetCalibrationValue(volatile uint32_t *regAddress)
<> 149:156823d33999 93 {
<> 150:02e0a0aed4ec 94 SYSTEM_CalAddrVal_TypeDef * p, * end;
<> 149:156823d33999 95
<> 150:02e0a0aed4ec 96 p = (SYSTEM_CalAddrVal_TypeDef *)(DEVINFO_BASE & 0xFFFFF000);
<> 150:02e0a0aed4ec 97 end = (SYSTEM_CalAddrVal_TypeDef *)DEVINFO_BASE;
<> 149:156823d33999 98
AnnaBridge 179:b0033dcd6934 99 for (; p < end; p++) {
AnnaBridge 179:b0033dcd6934 100 if (p->address == (uint32_t)regAddress) {
<> 150:02e0a0aed4ec 101 *regAddress = p->calValue;
<> 150:02e0a0aed4ec 102 return true;
<> 149:156823d33999 103 }
<> 149:156823d33999 104 }
<> 150:02e0a0aed4ec 105 /* Nothing found for regAddress */
<> 150:02e0a0aed4ec 106 return false;
<> 149:156823d33999 107 }
<> 149:156823d33999 108
<> 149:156823d33999 109 /** @} (end addtogroup SYSTEM) */
<> 150:02e0a0aed4ec 110 /** @} (end addtogroup emlib) */