A project example on sending sensor data to the cloud shows how an MQTT client (message queuing telemetry transport) can connect to an MQTT broker to publish data and receive parameter updates or commands from the cloud. An MQTT client is the name given to a device that runs an MQTT librar...
Example1: STM32MP157C-EV1Example 2: STM32MP135F-DKRCC可以提供2个输出时钟(MCO1, MCO2),可以作为外部设备的时钟源。通过以上两个例子的展示,看一下Myir的硬件设计:HSE采用的与STM32MP135F-DK相同的无源晶振设计,所以STM32CubeMX的配置如下:
ENABLE);//复位串口237RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2,DISABLE);//停止复位3839NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置NVIC中断分组2:2位抢占优先级,2位响应优先级 0-3;40NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;//使能串口2中断...
*/ void HAL_MutexUnlock(void *mutex) { return; } /** * @brief Writes formatted data to stream. * * @param [in] fmt: @n String that contains the text to be written, it can optionally contain embedded format specifiers that specifies how subsequent arguments are converted for output. *...
您应该会看到项目“stm32_bleuio_example”,检查它并单击“完成”。 6. 运行示例 在STMCubeIDE 中,单击锤子图标以构建项目。 使用TeraTerm、Putty 或 CoolTerm 等串行终端仿真程序打开“STMicroelectronics STLink 虚拟 COM 端口”。串行端口设置: 波特率:115200 数据位:8 奇偶校验:无 停止位:1 流量控制:无 在...
receive_flag) 应如下书写: // If receive a package from serial. if (receive_flag) 在程序块的结束行右方加注释标记,以表明某程序块的结束。说明:当代码段较长,特别多重嵌套时,这样做可以使代码更清晰,更便于。 示例:参见以下例子。 if (...) { while (index < MAX_INDEX) { / ...
The peripheral module can also communicate in full-duplex mode (bidirectional audio at 16 kHz) with a mobile device running the STBLESensor app, or receive stereo music at 48 kHz from the same app. The software with the suggested combination of STM32WB and ST devices can be used, for ex...
这块专用数据缓冲区的大小由所使用的端点数目和每个端点最大的数据分组大小所决定,每个端点最大可使用 512 字节缓冲区(专用的 512 字节,和 CAN 共用),最多可用于 16 个单向或 8 个双向端点。USB 模块同 PC 主机通信,根据 USB 规范实现令牌分组的检测,数据发送/接收的处理,和握手分组的处理。整个传输的格式由...
图片解码首先是最简单的bmp图片解码,关于bmp的结构可自行查阅,代码如下 #ifndef __BMPDECODE_H_#define__BMPDECODE_H_#include"ff.h"#include"lcd.h"#include"stdlib.h"#include"usb_type.h"//重定义区typedefcharCHAR;//数据类型重定义,便于移植typedefshortSHORT;//typedef int LONG;//typedef unsigned int...
Mabey one interrupt activates the whole line and if there are multiple interrupts mapped to one line you can't tell which one fired, but this is just a guess. The only two things I want to know in this example is whether the transmission was successful or if it timed out. So using ...