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Fix flash_protect for GD32F103.

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NIIBE Yutaka
2018-05-08 17:35:13 +09:00
parent f500ac03da
commit 2764fc4ea2
3 changed files with 12 additions and 5 deletions
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1
ChangeLog
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@@ -5,6 +5,7 @@
* doc/chopstx.texi (Compile-time macro): Add chapter.
* mcu/sys-stm32f103.c (usb_lld_sys_init): Use MHZ.
(flash_protect): Fix for GD32F103.
2018-04-26 NIIBE Yutaka <gniibe@fsij.org>

11
NEWS
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@@ -9,14 +9,17 @@ NEWS - Noteworthy changes
GD32F103 is an alternative implementation of STM32F103 by Giga Device,
which can run at 96MHz.
** Minor USB driver fix for STM32F103
BTABLE setting should be done for initialization, not for USB RESET.
** Minor USB driver fix for STM32F103/GD32F103
BTABLE setting should be done at initialization, not at USB RESET.
** Minor SYS driver fix for GD32F103
flash_protect should check FLASH_CR_OPTWRE.
** Minor ADC driver change for GD32F103
ADC on GD32F103 is another implementation and its behavior is somewhat
different. It requires waits after enabling. So, we use continuous
samping. Still, we observe enough noise (> 4.7 bit/byte) for each ADC
sampling.
sampling, instead of start and stop for each sample. Still, we
observe enough noise (> 4.7 bit/byte) for each ADC sampling.
* Major changes in Chopstx 1.8

5
mcu/sys-stm32f103.c
View File

@@ -1,7 +1,7 @@
/*
* sys-stm32f103.c - system routines for the initial page for STM32F103.
*
* Copyright (C) 2013, 2014, 2015, 2016, 2017
* Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018
* Flying Stone Technology
* Author: NIIBE Yutaka <gniibe@fsij.org>
*
@@ -256,6 +256,9 @@ flash_protect (void)
FLASH->OPTKEYR = FLASH_KEY1;
FLASH->OPTKEYR = FLASH_KEY2;
while (!(FLASH->CR & FLASH_CR_OPTWRE))
;
FLASH->CR |= FLASH_CR_OPTER;
FLASH->CR |= FLASH_CR_STRT;