STM32系列里带DA输出的价格最便宜的型号是哪个呢?谢谢了 stm32 da可以输出负电压不
\u600e\u4e48\u4f7f\u7528STM32 AD DA\uff0c\u5b9e\u73b0\u7684\u529f\u80fd\u5f88\u7b80\u5355\uff0cAD\u91c7\u96c6\u6570\u636e\uff0cDA\u76f4\u63a5\u8f93\u51faDA\u662f\u6570\u5b57\u8f6c\u6a21\u62df\u5427\uff0c\u4e00\u822c\u90fd\u662f\u8f93\u51faPWM\u6765\u63a7\u5236\u5427\uff0c\u4e0d\u77e5\u9053\u4f60\u5e72\u561b\u8981AD\u91c7\u96c6\uff0c\u7136\u540eDA\u8f93\u51fa\u5230\u54ea\uff1f\u5982\u679c\u662fDA\u8f93\u51fa\u5230\u7535\u673a\u7684\u8bdd\uff0c\u5c31\u662fPWM\u8f93\u51fa\u4e86\uff0c\u539f\u6765\u505a\u8fc7\u4e00\u4e2a\u91c7\u96c6AD\u4fe1\u53f7\uff0c\u7136\u540e\u8f93\u51faPWM\u5230\u7535\u673a\u63a7\u5236\u8f6c\u901f\u7684\u9879\u76ee\u7684\u3002
DAC\u8f93\u51fa\u7535\u538b
\u6570\u5b57\u8f93\u5165\u7ecf\u8fc7DAC\u88ab\u7ebf\u6027\u5730\u8f6c\u6362\u4e3a\u6a21\u62df\u7535\u538b\u8f93\u51fa\uff0c\u5176\u8303\u56f4\u4e3a0\u5230V REF+\u3002
\u4efb\u4e00DAC\u901a\u9053\u5f15\u811a\u4e0a\u7684\u8f93\u51fa\u7535\u538b\u6ee1\u8db3\u4e0b\u9762\u7684\u5173\u7cfb\uff1a
DAC\u8f93\u51fa = VREF x (DOR / 4095)\u3002
带DAC的最低端的是STM32F103RCT6。
STM32F103RBT6
STM32F103RBT6
不一定是最便宜的 但是9块多钱还不便宜吗？
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绛旓細//DAC閫氶亾1杈撳嚭鍒濆鍖 void Dac1_Init(void){ GPIO_InitTypeDef GPIO_InitStructure;DAC_InitTypeDef DAC_InitType;RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE ); //浣胯兘PORTA閫氶亾鏃堕挓 RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE ); //浣胯兘DAC閫氶亾鏃堕挓 GPIO_InitStructure....
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