robofly's People
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xuji520123 olabondia yawyd kuangsheng1987 umr490240 xuxiao19910803 lzh-ang smarthobee612 lxypxn cloudonwings csywing feiling4 songzhizhong 207425110 wangqiang1588 liujdincs 2-droneflygg songzhixin004 lighteven rickyjing transformer1990 eliswee countercf janpheleerobofly's Issues
关于无法使用串口下载程序的BUG
STM32使用串口下载程序需要把BOOT0和BOOT1做如下配置:
- BOOT0:高电平
- BOOT1:低电平
但是在RoboFly中,BOOT1即PB2作为SI24R1的IRQ信号输入引脚使用。在SI24R1中这个引脚内置了上拉电阻,所以单片机上电的时候,PB2会检测到高电平,无法进入串口下载。因为SI24R1芯片内部有上拉电阻,所以通过外置下拉电阻的方式也不能实现启动时BOOT1配置为低电平。
可行的办法就是在上电之前把BOOT1直接接地(不要通过电阻下拉),然后把BOOT0接高电平,就可以使用串口下载了。
后续在进行PCB设计的时候,可以把PB2更换为其他功能,避开SI24R1的IRQ信号。
关于使用XT1861B502MR-G 替代 HT7750SA的说明
XT1861B502MR-G 封装和功能基本完全兼容HT7750SA,经过测试前者比后者更稳定,遂使用前者替代后者。
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