(\u4e00) \u5de5\u4e1a\u73b0\u573a\u603b\u7ebf CAN \u7684\u57fa\u672c\u4ecb\u7ecd\u4ee5\u53ca STM32 \u7684 CAN \u6a21\u5757\u7b80\u4ecb\n<\/span><\/strong>\n\u9996\u5148\u901a\u8bfb\u624b\u518c\u4e2d\u5173\u4e8eCAN\u7684\u6587\u6863\uff0c\u5fc5\u987b\u7cbe\u8bfb\u3002\nSTM32F10xxx \u53c2\u8003\u624b\u518cRev7V3.pdf\n http:\/\/www.mystm32.com\/bbs\/redirect.php?tid=255&goto=lastpost#lastpost<\/a><\/a><\/p>\n

\u4e0b\u8f7d<\/strong><\/a> (37.38 KB)\n2009-8-16 11:46<\/div>\n<\/div>\n
(\u4e09) CAN \u63a5\u53e3\u7aef\u53e3\u6620\u5c04\n<\/span><\/strong><\/p>\n
STM32 \u4e2d\u7684 CAN \u7269\u7406\u5f15\u811a\u811a\u4f4d\u53ef\u4ee5\u8bbe\u7f6e\u6210\u4e09\u79cd\uff1a<\/p>\n
\u9ed8\u8ba4\u6a21\u5f0f\uff0c\u91cd\u5b9a\u4e49\u5730\u57401\u6a21\u5f0f\uff0c\u91cd\u5b9a\u4e49\u5730\u57402\u6a21\u5f0f<\/strong><\/p>\n
\u3002<\/p>\n
$\"\"$ $\"2.jpg\"$ <\/p>\n
\u4e0b\u8f7d<\/strong><\/a> (28.94 KB)\n
2009-8-16 11:51<\/div>\n<\/div>\n
\u5728\u6211\u4eec\u7684 Mini-STM32 \u4e0a\u9762\u6ca1\u6709\u63a5\u51fa CAN \u7684\u63a5\u53e3\u82af\u7247, \u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5229\u7528<\/p>\n
RealView MDK<\/p>\n
\u7684 CAN \u8f6f\u4ef6<\/p>\n
\u6a21\u62df<\/p>\n
\u6a21\u5757\u6765\u505a\u5b9e\u9a8c.<\/p>\n
\n
\u9ed8\u8ba4\u6a21\u5f0f<\/strong><\/p>\n
\/ Configure CAN pin: RX <\/em>\/<\/p>\n
GPIO<\/p>\n
_InitStructure.GPIO_Pin = GPIO_Pin_11;<\/p>\n
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;<\/p>\n
GPIO_Init(GPIOA, &GPIO_InitStructure);<\/p>\n
\/ Configure CAN pin: TX <\/em>\/<\/p>\n
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;<\/p>\n
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;<\/p>\n
GPIO_Init(GPIOA, &GPIO_InitStructure);<\/p>\n
\n
\u91cd\u5b9a\u4e49\u5730\u57401\u6a21\u5f0f<\/strong><\/p>\n
\/ Configure CAN pin: RX <\/em>\/<\/p>\n
\/\/GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;<\/p>\n
\/\/GPIO_Init(GPIOB, &GPIO_InitStructure);<\/p>\n
\/ Configure CAN pin: TX <\/em>\/<\/p>\n
\/\/GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;<\/p>\n
\/\/GPIO_Init(GPIOB, &GPIO_InitStructure);<\/p>\n
\/ Configure CAN Remap\u00a0\u00a0\u91cd\u5f71\u5c04 <\/em>\/<\/p>\n
\/\/GPIO_PinRemapConfig(GPIO_Remap1_CAN, ENABLE);<\/p>\n
\n
\u91cd\u5b9a\u4e49\u5730\u57402\u6a21\u5f0f\n<\/strong><\/p>\n
\/ Configure CAN pin: RX <\/em>\/<\/p>\n
\/\/GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;<\/p>\n
\/\/GPIO_Init(GPIOD, &GPIO_InitStructure);<\/p>\n
\/ Configure CAN pin: TX <\/em>\/<\/p>\n
\/\/GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;<\/p>\n
\/\/GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;<\/p>\n
\/\/GPIO_Init(GPIOD, &GPIO_InitStructure);<\/p>\n
\/ Configure CAN Remap\u00a0\u00a0\u91cd\u5f71\u5c04 <\/em>\/<\/p>\n
\/\/GPIO_PinRemapConfig(GPIO_Remap2_CAN, ENABLE);<\/p>\n
\n
\u8bbe\u7f6e\u5b8c CAN \u7684\u5f15\u811a\u4e4b\u540e\u8fd8\u9700\u8981\u6253\u5f00 CAN \u7684\u65f6\u949f\uff1a<\/strong><\/p>\n
\/ CAN Periph clock enable <\/em>\/<\/p>\n
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN, ENABLE);<\/p>\n
(\u56db) CAN \u6ce2\u7279\u7387\u8bbe\u7f6e\n<\/span><\/strong><\/p>\n
4\u3001\u6211\u4eec\u9700\u8981\u641e\u660e\u767dCAN\u6ce2\u7279\u7387\u7684\u8bbe\u7f6e\uff0c\u8fd9\u4e2a\u7ae0\u8282\u4e5f\u662f\u4f7f\u7528CAN\u7684\u6700\u91cd\u8981\u7684\u90e8\u5206\u4e4b\u4e00\uff0c\u56e0\u4e3a\u8fd9\u5b9e\u9645\u5e94\u7528\u4e2d\u6211\u4eec\u9700\u8981\u6839\u636e\u6211\u4eec\u5b9e\u9645\u7684\u573a\u5408\u6765\u9009\u62e9 CAN \u7684\u6ce2\u7279\u7387\u3002<\/p>\n
\u4e00\u822c\u60c5\u51b5\u4e0b\u97621M bps \u7684\u901f\u7387\u4e0b\u53ef\u4ee5\u6700\u9ad8\u53ef\u9760\u4f20\u8f93 40 \u7c73\u4ee5\u5185\u7684\u8ddd\u79bb\u3002<\/p>\n
\u5728 50K \u4ee5\u4e0b\u7684\u6ce2\u7279\u7387\u4e2d\u4e00\u822c\u53ef\u4ee5\u53ef\u9760\u4f20\u8f93\u6570\u516c\u91cc\u8fdc\u3002<\/p>\n
\u5bf9\u4e8e\u6ce2\u7279\u7387\u7684\u8bbe\u7f6e\u9700\u8981\u8be6\u7ec6\u5b66\u4e60\u53c2\u8003\u624b\u518c\u5bf9\u5e94\u90e8\u5206\u7684\u89e3\u91ca\u3002\u6211\u4eec\u5728\u8c03\u8bd5\u8f6f\u4ef6\u7684\u65f6\u5019\u53ef\u4ee5\u4f7f\u7528\u793a\u6ce2\u5668\u6765\u6d4b\u8bd5 CANTX \u5f15\u811a\u4e0a\u7684\u6ce2\u5f62\u7684\u6ce2\u7279\u7387\uff0c\u8fd9\u6837\u53ef\u4ee5\u5f97\u5230\u4e8b\u534a\u529f\u500d\u7684\u6548\u679c\uff0c\u5927\u5927\u7684\u7f29\u77ed\u8c03\u8bd5\u5b66\u4e60\u7684\u65f6\u95f4\u3002<\/p>\n
\/\/ ***<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n
\/\/\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0BaudRate = 1 \/ NominalBitTime<\/p>\n
\/\/\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0NominalBitTime = 1tq + tBS1 + tBS2<\/p>\n
\/\/\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0tq = (BRP[9:0] + 1) x tPCLK<\/p>\n
\/\/\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0tPCLK = CAN’s clock = APB1’s clock<\/p>\n
\/\/ ****<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n
\u4e5f\u5c31\u662fBaudRate = APB1 \/ ((BS1 + BS2 + 1) * Prescaler)<\/p>\n
\u8fd9\u91cc\u6ce8\u610f\u7684\u662f\u91c7\u7528\u70b9\u7684\u4f4d\u7f6e,\u4e5f\u5c31\u65f6BS1,BS2\u7684\u8bbe\u7f6e\u95ee\u9898\uff0c\u8fd9\u91cc\u6211\u4e5f\u627e\u4e86\u4e00\u4e9b\u8d44\u6599\uff0c\u6284\u5f55\u4e0b\u6765\u7ed9\u5927\u5bb6,\u662f CANopen \u534f\u8bae\u4e2d\u63a8\u8350\u7684\u8bbe\u7f6e\u3002<\/p>\n
1Mbps \u901f\u7387\u4e0b\uff0c\u91c7\u7528\u70b9\u7684\u4f4d\u7f6e\u57286tq\u4f4d\u7f6e\u5904\uff0cBS1=5, BS2=2<\/p>\n
500kbps \u901f\u7387\u4e0b\uff0c\u91c7\u7528\u70b9\u7684\u4f4d\u7f6e\u57288tq\u4f4d\u7f6e\u5904\uff0cBS1=7, BS2=3<\/p>\n
250kbps \u901f\u7387\u4e0b\uff0c\u91c7\u7528\u70b9\u7684\u4f4d\u7f6e\u572814tq\u4f4d\u7f6e\u5904\uff0cBS1=13, BS2=2<\/p>\n
125k, 100k, 50k, 20k, 10k \u7684\u91c7\u7528\u70b9\u4f4d\u7f6e\u4e0e 250K \u76f8\u540c\u3002<\/p>\n
\u56e0\u6b64\u6211\u4eec\u9700\u8981\u91cd\u89c6\u7684\u6709\u8f6f\u4ef6\u4e2d\u7684\u8fd9\u4e48\u51e0\u4e2a\u90e8\u5206\uff1a<\/p>\n
\/\/ \u8bbe\u7f6e AHB \u65f6\u949f\uff08HCLK\uff09<\/p>\n
\/\/ RCC_SYSCLK_Div1\u00a0\u00a0AHB \u65f6\u949f =\u00a0\u00a0\u7cfb\u7edf\u65f6\u949f<\/p>\n
RCC_HCLKConfig(RCC_SYSCLK_Div8);<\/p>\n
\/\/ \u8bbe\u7f6e\u4f4e\u901f AHB \u65f6\u949f\uff08PCLK1\uff09<\/p>\n
\/\/ RCC_HCLK_Div2\u00a0\u00a0APB1 \u65f6\u949f\u00a0\u00a0= HCLK \/ 2<\/p>\n
RCC_PCLK1Config(RCC_HCLK_Div2);<\/p>\n
\/\/ PLLCLK = 8MHz * 8 = 64 MHz<\/p>\n
\/\/ \u8bbe\u7f6e PLL \u65f6\u949f\u6e90\u53ca\u500d\u9891\u7cfb\u6570<\/p>\n
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_8);<\/p>\n
CAN \u6ce2\u7279\u7387\u8bbe\u7f6e\u4e2d\u9700\u8981\u7684\u5c31\u662fPCLK1 \u7684\u65f6\u949f\u3002<\/p>\n
CAN_InitStructure.CAN_Mode=CAN_Mode_LoopBack;<\/p>\n
CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;<\/p>\n
CAN_InitStructure.CAN_BS1=CAN_BS1_8tq;<\/p>\n
CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;<\/p>\n
CAN_InitStructure.CAN_Prescaler=5;<\/p>\n
\u901a\u8fc7\u4e0a\u9762\u90e8\u5206\u7684\u65f6\u949f\u8bbe\u7f6e\u6211\u4eec\u5df2\u7ecf\u53ef\u4ee5\u7b97\u51fa\u6211\u4eec\u7684\u6ce2\u7279\u7387\u4e86<\/p>\n
CAN_bps = PCLK1 \/ ((1 + 7 + 8) * 5) = 25K bps<\/p>\n
\u5927\u5bb6\u4e5f\u53ef\u4ee5\u5b9e\u9645\u6d4b\u8bd5\u4e2d\u4fee\u6539\u65f6\u949f\u503c\u6765\u901a\u8fc7\u793a\u6ce2\u5668\u6d4b\u8bd5\u6211\u4eec\u9700\u8981\u7684\u6ce2\u7279\u7387\u662f\u5426\u6b63\u786e\u4f8b\u5982\u5c06PLLCLK \u8bbe\u7f6e\u964d\u4f4e\u4e00\u534a\uff1a<\/p>\n
\/\/ PLLCLK = 8MHz * 4 = 32 MHz<\/p>\n
\/\/ \u8bbe\u7f6e PLL \u65f6\u949f\u6e90\u53ca\u500d\u9891\u7cfb\u6570<\/p>\n
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_4);<\/p>\n
\u90a3\u4e48\u6211\u4eec\u5f97\u5230\u7684CAN_bps\u4e5f\u4f1a\u964d\u4f4e\u4e00\u534a\u3002<\/p>\n
\u63a5\u4e0b\u6765\u8fd8\u53ef\u4ee5\u4fee\u6539 HCLK \u548c PCLK1 \uff0c\u5176\u5b9e\u6700\u7ec8\u8fd9\u51e0\u4e2a\u5206\u9891\u548c\u500d\u9891\u503c\u6700\u7ec8\u5f71\u54cd\u7684\u90fd\u662f PCLK1\u3002<\/p>\n
\u901a\u8fc7\u51e0\u6b21\u8bd5\u9a8c\uff0c\u76f8\u4fe1\u5927\u5bb6\u5e94\u8be5\u5f88\u5bb9\u6613\u638c\u63e1\u6ce2\u7279\u7387\u7684\u8bbe\u7f6e\u4e86\u3002<\/p>\n
\u8bbe\u7f6e\u5b8c\u6ce2\u7279\u7387\u6211\u4eec\u76f4\u63a5\u6d4b\u8bd5\u51fd\u6570\uff1a<\/p>\n
\/ CAN transmit at 100Kb\/s and receive by polling in loopback mode<\/em>\/<\/p>\n
TestRx = CAN_Polling();<\/p>\n
if (TestRx == FAILED)<\/p>\n
{<\/p>\n
\/ Turn on led connected to PA.00 pin (LD1) <\/em>\/<\/p>\n
GPIO_SetBits(GPIOA, GPIO_Pin_0);<\/p>\n
}<\/p>\n
else<\/p>\n
{<\/p>\n
\/ Turn off led connected to PA.00 pin (LD1) <\/em>\/<\/p>\n
GPIO_ResetBits(GPIOA, GPIO_Pin_0);<\/p>\n
}<\/p>\n
\/ CAN transmit at 500Kb\/s and receive by interrupt in loopback mode<\/em>\/<\/p>\n
TestRx = CAN_Interrupt();<\/p>\n
if (TestRx == FAILED)<\/p>\n
{<\/p>\n
\/ Turn on led connected to PA.01 pin (LD2) <\/em>\/<\/p>\n
GPIO_SetBits(GPIOA, GPIO_Pin_1);<\/p>\n
}<\/p>\n
else<\/p>\n
{<\/p>\n
\/ Turn off led connected to PA.01 pin (LD2) <\/em>\/<\/p>\n
GPIO_ResetBits(GPIOA, GPIO_Pin_1);<\/p>\n
}<\/p>\n
\u5c06<\/p>\n
CAN \u8f6f\u4ef6\u4eff\u771f\u6a21\u62df\u5668 <\/strong><\/p>\n
\u8c03\u7528\u51fa\u6765.<\/p>\n
$\"\"$ $\"4.JPG\"$ <\/p>\n
\u4e0b\u8f7d<\/strong><\/a> (61.84 KB)\n2009-8-16 00:27<\/div>\n<\/div>\n
\u5927\u5bb6\u53ef\u4ee5\u4eff\u771f\u7a0b\u5e8f\uff0c\u5f53\u7a0b\u5e8f\u4e2d Test \u7b49\u4e8e Passed \u90a3\u4e48\u8bf4\u660e Loopback \u6a21\u5f0f\u6d4b\u8bd5\u901a\u8fc7\u4e86\u3002<\/p>\n
\u5e76\u4e14\u5728 CAN \u901a\u8baf\u6846\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u53d1\u9001\u548c\u63a5\u6536\u5230\u7684\u6570\u636e:<\/p>\n
$\"\"$ $\"5.jpg\"$ <\/p>\n
\u4e0b\u8f7d<\/strong><\/a> (51.48 KB)\n2009-8-16 12:27<\/div>\n<\/div>\n
\u56de\u5faa\u6a21\u5f0f\u4e0b\u7684\u6e90\u4ee3\u7801, \u57fa\u4e8e MDK3.5:<\/strong>\n $\"\"$ Example7.1-CAN LoopBack Mode.rar<\/strong><\/a><\/p>\n
(493.79 KB)<\/p>\n
\u4e0b\u8f7d\u6b21\u6570: 83\n\u9605\u8bfb\u6743\u9650: 10\n2009-8-16 12:35<\/div>\n<\/div>\n
\u5230\u6b64\u65f6\u8bf4\u660e\u5982\u679c\u5927\u5bb6\u53ea\u6709\u4e00\u5757CAN\u6a21\u5757\u7684\u65f6\u5019\u5b66\u4e60\u53ef\u4ee5\u544a\u4e00\u4e2a\u6bb5\u843d\u4e86\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u5e76\u4e0d\u4ee3\u8868\u5927\u5bb6\u5c31\u5df2\u7ecf\u638c\u63e1\u4e86 CAN \u4e86\uff0c\u6b63\u771f\u8981\u638c\u63e1\u5b83\uff0c\u5927\u5bb6\u8fd8\u662f\u9700\u8981\u770b\u5927\u91cf\u7684 CAN \u90e8\u5206\u7684\u8d44\u6599\uff0c\u53c2\u8003\u624b\u518c\u90e8\u5206\u7684\u4e5f\u662f\u4e0d\u591f\u7684\uff0c\u5e02\u9762\u4e0a\u6709\u51e0\u672c\u4e13\u95e8\u4ecb\u7ecd\u73b0\u573a\u603b\u7ebf\u548cCAN\u603b\u7ebf\u7684\u4e66\uff0c\u63a8\u8350\u5927\u5bb6\u4e70\u6765\u7ecf\u5e38\u7ffb\u7ffb\u770b\u770b\uff0c\u8fd9\u6837\u5230\u9700\u8981\u5b9e\u9645\u5e94\u7528\u7684\u65f6\u5019\u624d\u53ef\u4ee5\u505a\u5230 \u5982\u9c7c\u5f97\u6c34\u3002<\/p>\n
(\u4e94) \u6b63\u5e38\u6a21\u5f0f\n<\/span><\/strong><\/p>\n
\u5b8c\u6210\u4e86 loopback \u6a21\u5f0f\u7684\u6d4b\u8bd5\u4e4b\u540e\u63a5\u4e0b\u6765\u6211\u4eec\u9700\u8981\u5b66\u4e60\u7684\u5c31\u662f\u591a\u673a\u901a\u8baf\u4e86\uff0c\u5f53\u7136\u7531\u4e8e\u6211\u4eec\u7684 Mini-STM32 \u6ca1\u6709\u5c06 CAN \u63a5\u53e3\u5f15\u51fa\u6765, \u6240\u4ee5\u6211\u4eec\u6ca1\u6709\u529e\u6cd5\u5728\u677f\u5b50\u4e0a\u9762\u505a\u8fd9\u90e8\u5206\u7684\u8bd5\u9a8c\u4e86\uff0c\u53ea\u80fd\u5728 RealView MDK \u7684\u8f6f\u4ef6\u4e2d\u8fdb\u884c\u6a21\u62df\u3002<\/p>\n
\u5982\u679c\u60a8\u62e5\u6709\u4e24\u5757\u5e26 CAN \u786c\u4ef6\u7684 STM32 \u7684\u677f\u5b50\uff0c\u60a8\u9700\u8981\u81ea\u5df1\u6784\u5efa\u786c\u4ef6\u7684\u7269\u7406\u5c42\u7684\u8fde\u63a5, \u4f7f\u7528\u4e09\u6839\u7ebf\u5c06 CANH,CANL,GND \u4e09\u6839\u7ebf\u76f4\u8fde\uff0c\u5f53\u7136\u4f60\u8981\u63a5\u597d\u7ec8\u7aef\u7535\u963b\u624d\u80fd\u4fdd\u8bc1\u901a\u8baf\u7684\u6b63\u5e38\u901a\u8baf\uff0c\u5f53\u4e24\u5757\u677f\u5b50\u90fd\u8df3\u597d\u540e\u6211\u4eec\u4f7f\u7528\u4e07\u7528\u8868\u6d4b\u91cf\u4e0b CANH\u548cCANL\u4e4b\u95f4\u7684\u7535\u963b\u662f\u5426\u4e3a 60 \u6b27\u59c6\u3002\u591a\u5757\u677f\u5b50\u591a\u673a\u901a\u8baf\u7684\u662f\u5426\u4f60\u53ea\u9700\u8981\u5728\u603b\u7ebf\u7684\u4e3b\u673a\u7aef\u548c\u6700\u540e\u4e00\u7aef\u63a5\u4e0a\u7ec8\u7aef\u7535\u963b\u5c31\u53ef\u4ee5\u4e86.<\/p>\n
$\"\"$ $\"3.jpg\"$ <\/p>\n
\u4e0b\u8f7d<\/strong><\/a> (24.18 KB)\n
2009-8-15 23:11<\/div>\n<\/div>\n
\u5728\u521d\u59cb\u5316\u5b8c\u6210\u540e\uff0c\u8f6f\u4ef6\u5e94\u8be5\u8ba9\u786c\u4ef6\u8fdb\u5165\u6b63\u5e38\u6a21\u5f0f\uff0c\u4ee5\u4fbf\u6b63\u5e38\u63a5\u6536\u548c\u53d1\u9001\u62a5\u6587\u3002\u8f6f\u4ef6\u53ef\u4ee5\u901a\u8fc7\u5bf9 CAN_MCR \u5bc4\u5b58\u5668\u7684INRQ\u4f4d\u6e05 ‘0’\uff0c\u6765\u8bf7\u6c42\u4ece\u521d\u59cb\u5316\u6a21\u5f0f\u8fdb\u5165\u6b63\u5e38\u6a21\u5f0f\uff0c\u7136\u540e\u8981\u7b49\u5f85\u786c\u4ef6\u5bf9 CAN_MSR \u5bc4\u5b58\u5668\u7684 INAK \u4f4d\u7f6e ‘1’ \u7684\u786e\u8ba4\u3002\u5728\u8ddf CAN \u603b\u7ebf\u53d6\u5f97\u540c\u6b65\uff0c\u5373\u5728 CANRX \u5f15\u811a\u4e0a\u76d1\u6d4b\u5230 11 \u4e2a\u8fde\u7eed\u7684\u9690\u6027\u4f4d (\u7b49\u6548\u4e8e\u603b\u7ebf\u7a7a\u95f2) \u540e\uff0cbxCAN \u624d\u80fd\u6b63\u5e38\u63a5\u6536\u548c\u53d1\u9001\u62a5\u6587\u3002<\/p>\n
\u4e0d\u9700\u8981\u5728\u521d\u59cb\u5316\u6a21\u5f0f\u4e0b\u8fdb\u884c\u8fc7\u6ee4\u5668\u521d\u503c\u7684\u8bbe\u7f6e\uff0c\u4f46\u5fc5\u987b\u5728\u5b83\u5904\u5728\u975e\u6fc0\u6d3b\u72b6\u6001\u4e0b\u5b8c\u6210 (\u76f8\u5e94\u7684 FACT \u4f4d\u4e3a ‘0’ ) \u3002\u800c\u8fc7\u6ee4\u5668\u7684\u4f4d\u5bbd\u548c\u6a21\u5f0f\u7684\u8bbe\u7f6e\uff0c\u5219\u5fc5\u987b\u5728\u521d\u59cb\u5316\u6a21\u5f0f\u4e2d\u8fdb\u5165\u6b63\u5e38\u6a21\u5f0f\u524d\u5b8c\u6210\u3002<\/p>\n
\u51c6\u5907\u5de5\u4f5c\u505a\u5b8c\u6211\u4eec\u9700\u8981\u8bbe\u7f6e CAN \u901a\u8baf\u90e8\u4efd\u8f6f\u4ef6\u3002<\/p>\n
\u6211\u4eec\u628a TestStatus CAN_Polling(void) \u51fd\u6570\u548c TestStatus CAN_Interrupt(void) \u51fd\u6570\u4e2d\u7684 LoopBack \u6a21\u5f0f\u4fee\u6539\u4e3a Normal \u6a21\u5f0f.<\/p>\n
\/\/CAN_InitStructure.CAN_Mode=CAN_Mode_LoopBack;<\/p>\n
CAN_InitStructure.CAN_Mode=CAN_Mode_Normal;<\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u53ef\u4ee5\u505a\u5b9e\u9a8c\u4e86. \u4f46\u662f\u7531\u4e8e RealView MDK \u7684 CAN \u6a21\u5757\u6ca1\u6709\u529e\u6cd5\u63a5\u6536, \u6240\u4ee5\u6211\u4eec\u53ea\u505a\u53d1\u9001\u7684\u4f8b\u5b50.<\/p>\n
\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\u5206\u522b\u53d1\u9001\u4e24\u5e27\u6570\u636e:\n(1) TestStatus CAN_Polling(void) \u67e5\u8be2\u53d1\u9001<\/strong><\/p>\n
\u7b2c\u4e00\u5e27\u6570\u636e\u4e3a:\u00a0\u00a0ID \u4e3a 0x11, \u6570\u636e\u4e3a 8 \u4e2a\u5b57\u8282\u7684\u4e00\u4e2a\u6570\u636e\u5305.<\/p>\n
TxMessage.StdId=0x11;<\/p>\n
TxMessage.RTR=CAN_RTR_DATA;<\/p>\n
TxMessage.IDE=CAN_ID_STD;<\/p>\n
TxMessage.DLC=8;<\/p>\n
TxMessage.Data[0]=0x01;<\/p>\n
TxMessage.Data[1]=0x02;<\/p>\n
TxMessage.Data[2]=0x03;<\/p>\n
TxMessage.Data[3]=0x04;<\/p>\n
TxMessage.Data[4]=0x05;<\/p>\n
TxMessage.Data[5]=0x06;<\/p>\n
TxMessage.Data[6]=0x07;<\/p>\n
TxMessage.Data[7]=0x08;<\/p>\n
(2) TestStatus CAN_Interrupt(void) \u4e2d\u65ad\u53d1\u9001\n<\/strong><\/p>\n
\u7b2c\u4e8c\u5e27\u6570\u636e\u4e3a:ID \u4e3a 0x1234, \u6570\u636e\u4e3a 8 \u4e2a\u5b57\u8282\u7684\u4e00\u4e2a\u6570\u636e\u5305.<\/p>\n
TxMessage.StdId=0x12;<\/p>\n
TxMessage.ExtId=0x34;<\/p>\n
TxMessage.IDE=CAN_ID_EXT;<\/p>\n
TxMessage.RTR=CAN_RTR_DATA;<\/p>\n
TxMessage.DLC=8;<\/p>\n
TxMessage.Data[0]=0x11;<\/p>\n
TxMessage.Data[1]=0x22;<\/p>\n
TxMessage.Data[2]=0x33;<\/p>\n
TxMessage.Data[3]=0x44;<\/p>\n
TxMessage.Data[4]=0x55;<\/p>\n
TxMessage.Data[5]=0x66;<\/p>\n
TxMessage.Data[6]=0x77;<\/p>\n
TxMessage.Data[7]=0x88;<\/p>\n
CAN_Transmit(&TxMessage);<\/p>\n
\u5728\u4e3b\u51fd\u6570\u4e2d\u521d\u59cb\u5316\u4e4b\u540e\u52a0\u4e0a\u8fd9\u4e24\u53e5\u53d1\u9001\u51fd\u6570:<\/p>\n
\/ CAN transmit at 100Kb\/s and receive by polling in Normal mode<\/em>\/<\/p>\n
CAN_Polling();<\/p>\n
while(i++ < 1000);<\/p>\n
\/ CAN transmit at 500Kb\/s and receive by interrupt in Normal mode<\/em>\/<\/p>\n
CAN_Interrupt();<\/p>\n
\u7a0b\u5e8f\u6539\u5b8c\u4e86, \u6211\u4eec\u9700\u8981\u7f16\u8bd1\u901a\u8fc7\u540e, \u70b9\u8f6f\u4ef6\u4eff\u771f.<\/p>\n
\u5c06<\/p>\n
CAN \u8f6f\u4ef6\u4eff\u771f\u6a21\u62df\u5668 <\/strong><\/p>\n
\u8c03\u7528\u51fa\u6765.<\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u5168\u901f\u8fd0\u884c\u5230 while(1) \u5c31\u53ef\u4ee5\u770b\u5230\u7ed3\u679c\u4e86.<\/p>\n
$\"\"$ $\"1.jpg\"$ <\/p>\n
\u4e0b\u8f7d<\/strong><\/a> (87.37 KB)\n2009-8-16 00:24<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"
(\u4e00) \u5de5\u4e1a\u73b0\u573a\u603b\u7ebf CAN \u7684\u57fa\u672c\u4ecb\u7ecd\u4ee5\u53ca STM32 \u7684 CAN \u6a21\u5757\u7b80\u4ecb \u9996\u5148\u901a\u8bfb\u624b\u518c\u4e2d\u5173\u4e8eCAN\u7684\u6587\u6863\uff0c\u5fc5\u987b\u7cbe\u8bfb\u3002 STM32F10xxx \u53c2\u8003\u624b\u518cRev7V3.pdf http:\/\/www...&#46<\/a>;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[56,41,35,46,51],"class_list":["post-93","post","type-post","status-publish","format-standard","hentry","category-scm","tag-can","tag-stm32","tag-35","tag-46","tag-51"],"_links":{"self":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/93","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/comments?post=93"}],"version-history":[{"count":2,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/93\/revisions"}],"predecessor-version":[{"id":104,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/93\/revisions\/104"}],"wp:attachment":[{"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/media?parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/categories?post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/tags?post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}