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[TY51822r3] add description on comment, fixed years

pull/1490/head
ytsuboi 2016-01-11 22:57:46 +09:00
parent 9a9885e5fa
commit 9b7d776d40
3 changed files with 10 additions and 3 deletions
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9
libraries/mbed/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/system_nrf51.c
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@ -62,7 +62,14 @@ void SystemCoreClockUpdate(void)
void SystemInit(void) void SystemInit(void)
{ {
#if defined(TARGET_NRF_32MHZ_XTAL) #if defined(TARGET_NRF_32MHZ_XTAL)
// For 32MHz external XTAL such as Taiyo Yuden /* For 32MHz HFCLK XTAL such as Taiyo Yuden
Physically, tiny footprint XTAL oscillate higher freq. To make BLE modules smaller, some modules
are using 32MHz XTAL.
This code wriging the value 0xFFFFFF00 to the UICR (User Information Configuration Register)
at address 0x10001008, to make nRF51 works with 32MHz system clock. This register will be overwritten
by SoftDevice to 0xFFFFFFFF, the default value. Each hex files built with mbed classic online compiler
contain SoftDevice, so that, this code run once just after the hex file will be flashed onto nRF51.
After changing the value, nRF51 need to reboot. */
if (*(uint32_t *)0x10001008 == 0xFFFFFFFF) if (*(uint32_t *)0x10001008 == 0xFFFFFFFF)
{ {
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos; NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;

2
libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/TARGET_TY51822R3/PinNames.h
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@ -1,5 +1,5 @@
/* mbed Microcontroller Library /* mbed Microcontroller Library
* Copyright (c) 2013 Nordic Semiconductor * Copyright (c) 2015 Nordic Semiconductor
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.

2
libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/TARGET_TY51822R3/device.h
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@ -1,5 +1,5 @@
/* mbed Microcontroller Library /* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited * Copyright (c) 2006-2015 ARM Limited
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.