{"id":76,"date":"2023-08-18T15:13:14","date_gmt":"2023-08-18T07:13:14","guid":{"rendered":"https:\/\/xuebuwan.cn\/?p=76"},"modified":"2023-08-18T19:17:25","modified_gmt":"2023-08-18T11:17:25","slug":"%e5%90%88%e5%ae%99air001-hal%e5%ba%93-%e4%b8%b2%e5%8f%a3%e6%8e%a5%e6%94%b6%e7%a9%ba%e9%97%b2%e4%b8%ad%e6%96%addma","status":"publish","type":"post","link":"https:\/\/xuebuwan.cn\/index.php\/2023\/08\/18\/%e5%90%88%e5%ae%99air001-hal%e5%ba%93-%e4%b8%b2%e5%8f%a3%e6%8e%a5%e6%94%b6%e7%a9%ba%e9%97%b2%e4%b8%ad%e6%96%addma\/","title":{"rendered":"\u5408\u5b99AIR001 HAL\u5e93 \u4e32\u53e3\u63a5\u6536\u7a7a\u95f2\u4e2d\u65ad+DMA"},"content":{"rendered":"

\u5408\u5b99AIR001 HAL\u5e93 \u4e32\u53e3\u63a5\u6536\u7a7a\u95f2\u4e2d\u65ad+DMA<\/h1>\n

HAL\u5e93\u561b\uff0c\u4e0eSTM32\u64cd\u4f5c\u57fa\u672c\u4e00\u81f4\uff0c\u4e0b\u9762\u662f\u6d41\u7a0b<\/p>\n

\u521d\u59cb\u5316UART<\/h3>\n

\u8fd9\u91cc\u7528\u7684\u662f\u4e32\u53e31\uff0c\u6240\u4ee5\u4ee5\u4e0b\u90fd\u662f\u4e32\u53e31\u7684\u521d\u59cb\u5316<\/p>\n

\u9996\u5148\u521b\u5efa\u4e32\u53e31\u7684\u64cd\u4f5c\u53e5\u67c4<\/p>\n

\u7136\u540e\u4f7f\u80fd\u4e32\u53e31\u7684\u65f6\u949f\u4e0e\u914d\u7f6e\u4e32\u53e31\u7684\u5404\u9879\u53c2\u6570<\/p>\n

UART_HandleTypeDef huart1;        \/\/ uart\u53e5\u67c4<\/code><\/pre>\n
__HAL_RCC_USART1_CLK_ENABLE();               \/\/ \u4f7f\u80fduart1\u65f6\u949f\nhuart1.Instance = USART1;                    \/\/ USART1\nhuart1.Init.BaudRate = 460800;               \/\/ \u6ce2\u7279\u7387\nhuart1.Init.WordLength = UART_WORDLENGTH_8B; \/\/ 8\u4f4d\u6570\u636e\u957f\u5ea6\nhuart1.Init.StopBits = UART_STOPBITS_1;      \/\/ 1\u4f4d\u505c\u6b62\u4f4d\nhuart1.Init.Parity = UART_PARITY_NONE;       \/\/ \u65e0\u6821\u9a8c\u4f4d\nhuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; \/\/ \u65e0\u786c\u4ef6\u6d41\u63a7\nhuart1.Init.Mode = UART_MODE_TX_RX;          \/\/ \u6536\u53d1\u6a21\u5f0f<\/code><\/pre>\n
\u8c03\u7528HAL\u5e93\u4e32\u53e3\u521d\u59cb\u5316\u51fd\u6570\u8fdb\u884c\u4e32\u53e3\u521d\u59cb\u5316<\/p>\n
HAL_UART_Init(&huart1);<\/code><\/pre>\n
\u914d\u7f6e\u4e32\u53e31\u4e2d\u65ad\uff0c\u4e2d\u65ad\u53f7\u53ef\u4ee5\u5728air001_dev.h\u5934\u6587\u4ef6\u4e2d\u627e\u5230<\/p>\n
\u5982\u4e0b\u56fe<\/p>\n
\"image-20230818134448665\"<\/div><\/p>\n
    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0); \/\/ \u62a2\u5360\u4f18\u5148\u7ea70\uff0c\u5b50\u4f18\u5148\u7ea70\n    HAL_NVIC_EnableIRQ(USART1_IRQn);         \/\/ \u4f7f\u80fd\u4e32\u53e31\u4e2d\u65ad<\/code><\/pre>\n
\u590d\u7528GPIO\u590d\u7528\u529f\u80fd<\/h3>\n
\u6b64\u5904\u4f7f\u7528PF0\u4e0ePF1\u4f5c\u4e3a\u4e32\u53e31\u7684RX\u4e0eTX\u811a\uff0c\u5f15\u811a\u529f\u80fd\u53ef\u4ee5\u770b\u624b\u518c<\/p>\n
\"image-20230818142847553\"<\/div><\/p>\n
\u9996\u5148\u4f7f\u80fdGPIOF\u7684\u65f6\u949f<\/p>\n
__HAL_RCC_GPIOF_CLK_ENABLE(); \/\/ \u4f7f\u80fdGPIOF\u65f6\u949f<\/code><\/pre>\n
\u521b\u5efaGPIO\u64cd\u4f5c\u53e5\u67c4<\/p>\n
GPIO_InitTypeDef GPIO_InitStruct;<\/code><\/pre>\n
\u590d\u7528PF0\u4e0ePF1\u4e3a\u4e32\u53e3\u7684\u8f93\u5165\u8f93\u51fa<\/p>\n
GPIO\u590d\u7528\u529f\u80fd\u8868\u53ef\u4ee5\u770b\u624b\u518c\u4e2d\u7684\u7aef\u53e3\u590d\u7528\u529f\u80fd\u5217\u8868<\/p>\n
\"image-20230818143346801\"<\/div><\/p>\n
\"image-20230818143425323\"<\/div><\/p>\n
    \/\/ PF0\u590d\u7528\u4e3aUSART1_RX\n    GPIO_InitStruct.Pin = GPIO_PIN_0;                  \/\/ PF1\n    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;            \/\/ \u63a8\u633d\u8f93\u51fa\n    GPIO_InitStruct.Pull = GPIO_PULLUP;                \/\/ \u4e0a\u62c9\n    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; \/\/ \u9ad8\u901f\n    GPIO_InitStruct.Alternate = GPIO_AF8_USART1;       \/\/ \u590d\u7528\u4e3aUSART1_RX\n    HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);\n\n    \/\/ PF1\u590d\u7528\u4e3aUSART1_TX\n    GPIO_InitStruct.Pin = GPIO_PIN_1;                  \/\/ PF1\n    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;            \/\/ \u63a8\u633d\u8f93\u51fa\n    GPIO_InitStruct.Pull = GPIO_PULLUP;                \/\/ \u4e0a\u62c9\n    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; \/\/ \u9ad8\u901f\n    GPIO_InitStruct.Alternate = GPIO_AF8_USART1;       \/\/ \u590d\u7528\u4e3aUSART1_TX\n    HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);<\/code><\/pre>\n
\u5230\u8fd9\u91cc\u4e32\u53e3\u4e2d\u65ad\u4e0eGPIO\u90e8\u5206\u5c31\u521d\u59cb\u5316\u5b8c\u6210\u4e86\uff0c\u4e0b\u9762\u521d\u59cb\u5316DMA\u90e8\u5206<\/p>\n
\u521d\u59cb\u5316DMA<\/h3>\n
\u540c\u6837\u7684\u6b65\u9aa4\uff0c\u4e0eSTM32\u57fa\u672c\u65e0\u5f02<\/p>\n
\u9996\u5148\u4f7f\u80fdDMA1\u65f6\u949f<\/p>\n
__HAL_RCC_DMA_CLK_ENABLE();<\/code><\/pre>\n
\u521b\u5efaDMA\u64cd\u4f5c\u53e5\u67c4<\/p>\n
DMA_HandleTypeDef hdma_usart1_rx; \/\/ DMA\u53e5\u67c4<\/code><\/pre>\n
\u914d\u7f6eDMA\u901a\u9053\uff0c\u6a21\u5f0f\uff0c\u65b9\u5411\u7b49\u4fe1\u606f<\/p>\n
hdma_usart1_rx.Instance = DMA1_Channel1;                       \/\/ DMA1\u901a\u90531\nhdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;          \/\/ \u5916\u8bbe\u5230\u5185\u5b58 \u65b9\u5411\nhdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;              \/\/ \u5916\u8bbe\u975e\u589e\u91cf\u6a21\u5f0f\nhdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;                  \/\/ \u5185\u5b58\u589e\u91cf\u6a21\u5f0f\nhdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; \/\/ \u5916\u8bbe\u6570\u636e\u5bbd\u5ea6\u4e3a8\u4f4d\nhdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;    \/\/ \u5185\u5b58\u6570\u636e\u5bbd\u5ea6\u4e3a8\u4f4d\nhdma_usart1_rx.Init.Mode = DMA_NORMAL;                         \/\/ \u6b63\u5e38\u6a21\u5f0f\nhdma_usart1_rx.Init.Priority = DMA_PRIORITY_VERY_HIGH;         \/\/ \u4f18\u5148\u7ea7\u4e3a\u975e\u5e38\u9ad8<\/code><\/pre>\n
\u8c03\u7528\u63a5\u53e3\u521d\u59cb\u5316DMA<\/p>\n
HAL_DMA_Init(&hdma_usart1_rx);<\/code><\/pre>\n
\u8fd9\u91cc\u8981\u6ce8\u610f\uff0c\u4e0d\u8981\u5fd8\u8bb0\u628aDMA\u4e0e\u4e32\u53e3\u8fdb\u884c\u5173\u8054\uff0c\u4e0d\u7136\u8bfb\u4e0d\u5230\u6570\u636e<\/strong><\/p>\n
__HAL_LINKDMA(&huart1, hdmarx, hdma_usart1_rx);                 \/\/ \u5173\u8054\u4e32\u53e31\u7684hdmarx\nHAL_DMA_ChannelMap(&hdma_usart1_rx, DMA_CHANNEL_MAP_USART1_RX); \/\/ DMA\u4e0eUART\u5173\u8054<\/code><\/pre>\n
DMA\u521d\u59cb\u5316\u5b8c\u6210<\/p>\n
\u7f16\u5199\u4e32\u53e3\u4e2d\u65ad\u5904\u7406\u51fd\u6570<\/h3>\n
\u9996\u5148\u627e\u5230startup_air_dev.s\u6c47\u7f16\u542f\u52a8\u4ee3\u7801\uff0c\u627e\u5230\u91cc\u9762\u7684\u4e32\u53e31\u4e2d\u65ad\u51fd\u6570\u540d\uff0c\u5982\u4e0b\u56fe<\/p>\n
\"image-20230818135414385\"<\/div><\/p>\n
\u590d\u5236\u6b64\u540d\u79f0\uff0c\u5728air001xx_it.c\u4e2d\u7f16\u5199\u4e2d\u65ad\u5904\u7406\u51fd\u6570<\/p>\n
\u8fd9\u91cc\u8981\u6ce8\u610f\uff0c\u5728\u4e2d\u65ad\u5904\u7406\u51fd\u6570\u6700\u540e\u4e00\u5b9a\u8981\u52a0\u4e0a\u6e05\u9664\u6ea2\u51fa\u9519\u8bef\u8fd9\u90e8\u5206\uff08\u8bfbSR\u4e0eDR\u5bc4\u5b58\u5668\uff09<\/strong>\uff0c\u4e0d\u7136\u4f1a\u5bfc\u81f4\u4e0a\u7535\u5c31\u4ea7\u751f\u4e00\u4e2a\u786c\u9519\u8bef\u4e2d\u65ad\uff08\u6682\u65f6\u4e0d\u6e05\u695a\u4e3a\u5565\uff09<\/p>\n
\u4e2d\u65ad\u5185\u5c3d\u91cf\u7b80\u6d01\uff0c\u4e0d\u8981\u6709\u590d\u6742\u8017\u65f6\u64cd\u4f5c\uff0c\u8fd9\u91cc\u662f\u7f6e\u4f4d\u6807\u5fd7\u4f4d\uff0c\u7136\u540e\u5728main\u51fd\u6570\u4e2d\u5904\u7406<\/p>\n
void USART1_IRQHandler(void) \/\/ \u4e32\u53e31\u4e2d\u65ad\n{\n  if (__HAL_UART_GET_FLAG(&huart1, UART_FLAG_IDLE) != RESET) \/\/ \u5224\u65ad\u662f\u5426\u4e3a\u7a7a\u95f2\u4e2d\u65ad\n  {\n    UART1_FLAG = 1;\n    __HAL_UART_CLEAR_IDLEFLAG(&huart1);\n  }\n  HAL_UART_IRQHandler(&huart1);\n  \/\/ \u6e05\u9664\u6ea2\u51fa\u9519\u8bef\n  __HAL_UART_CLEAR_OREFLAG(&huart1);\n}<\/code><\/pre>\n
\u5f00\u542f\u4e32\u53e3\u63a5\u6536\u4e2d\u65ad\u4e0eDMA<\/h3>\n
\u521d\u59cb\u5316\u5b8c\u6210\u4e32\u53e3\u4e0eDMA\u4e4b\u540e\u4f7f\u80fd\u4e32\u53e3\u7a7a\u95f2\u4e2d\u65ad\uff0c\u5f00\u542f\u4e32\u53e3DMA\u63a5\u6536<\/p>\n
__HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);     \/\/ \u5f00\u542f\u4e32\u53e31\u7a7a\u95f2\u4e2d\u65ad\nHAL_UART_Receive_DMA(&huart1, UART_BUF, RX_NUM); \/\/ \u4e32\u53e31\u63a5\u6536DMA<\/code><\/pre>\n
\u8fd9\u4e8b\u5982\u679c\u6709\u6570\u636e\u53d1\u9001\u5b8c\u6210\u4e32\u53e3\u7a7a\u95f2\uff0c\u4f1a\u89e6\u53d1\u4e32\u53e3\u7a7a\u95f2\u4e2d\u65ad\uff0c\u4e2d\u65ad\u4e2d\u7f6e\u4f4d\u6807\u5fd7\u4f4d\uff0c<\/p>\n
\u5728main\u51fd\u6570while\u5faa\u73af\u4e2d\u5224\u65ad\u6807\u5fd7\u4f4d\u8fdb\u884c\u5904\u7406\u5373\u53ef\uff0c\u5148\u505c\u6b62DMA\u63a5\u6536\u7136\u540e\u5904\u7406\u5b8c\u6210\u540e\u91cd\u65b0\u4f7f\u80fd\u4e32\u53e3DMA\u63a5\u6536<\/p>\n
  while (1)\n  {\n    if (UART1_FLAG)\n    {\n      HAL_UART_DMAStop(&huart1);\n      debug_print("%s", UART_BUF); \/\/ \u6253\u5370\u4e32\u53e3\u63a5\u6536\u5230\u7684\u6570\u636e\n      APP_UART_Analysis();\n      memset(UART_BUF, 0, sizeof(UART_BUF));\n      HAL_UART_Receive_DMA(&huart1, UART_BUF, RX_NUM); \/\/ \u4e32\u53e31\u63a5\u6536DMA\n      UART1_FLAG = 0;\n    }\n}<\/code><\/pre>\n
END<\/h3>\n
\"QQ\u5f55\u5c4f20230818150853\"<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"
\u5408\u5b99AIR001 HAL\u5e93 \u4e32\u53e3\u63a5\u6536\u7a7a\u95f2\u4e2d\u65ad+DMA HAL\u5e93\u561b\uff0c\u4e0eSTM32\u64cd\u4f5c\u57fa\u672c\u4e00\u81f4\uff0c\u4e0b\u9762\u662f\u6d41\u7a0b \u521d\u59cb\u5316 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[17],"class_list":["post-76","post","type-post","status-publish","format-standard","hentry","category-air001","tag-uart"],"_links":{"self":[{"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/posts\/76","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/comments?post=76"}],"version-history":[{"count":1,"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/posts\/76\/revisions"}],"predecessor-version":[{"id":77,"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/posts\/76\/revisions\/77"}],"wp:attachment":[{"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/media?parent=76"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/categories?post=76"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xuebuwan.cn\/index.php\/wp-json\/wp\/v2\/tags?post=76"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}