you’ll have periodic interrupts from the ADC that are too much for the CPU to handle. This will introduce jitter injection and interrupt latency and all sorts of timing issues to the system. This can be avoided by using DMA.
26/37/51 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant Debug mode Serial wire debug (SWD) & JTAG interfaces 6 timers Two 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input 16-bit, motor cont...
The STMicroelectronics STM32F103VE is an ARM 32-bit Cortex-M3 Microcontroller, 72MHz, 512kB Flash, 64kB SRAM, Flexible Static Memory Controller for SRAM, PSRAM, NOR and NAND Flash, PLL, Embedded Internal RC 8MHz and 32kHz, Real-Time Clock, Nested Interrupt Controller, Power Saving Modes, ...
The STMicroelectronics STM32F103T4 is an ARM 32-bit Cortex-M3 Microcontroller, 72MHz, 16kB Flash, 6kB SRAM, PLL, Embedded Internal RC 8MHz and 32kHz, Real-Time Clock, Nested Interrupt Controller, Power Saving Modes, JTAG and SWD, 2 Synch. 16-bit Timers with Input Capture, Output Compare...
之前做的项目中,由于需要与多个设备进行通信,所以为了充分利用MCU的能力,除了需要配置RS485接口通信协议之外,还需要预留可以配置UDP通信协议的端口。实际项目中使用的STM32F427为MCU的产品,本身是集成了MAC功能的,不过为了减轻CPU的负担,其实最好也是外界一块网络芯片。但是我目前手中只有STM32F103ZE系列的MCU,因此只能通...
quadrature encoder interface. Accordingly STM3210x can handles the encoder signal without any CPU overhead which it is possible for CPU to focus on the vector control.在马达控制类应用中, 正交编码器可以反馈马达的转子位置及转速信号。TM32F10x 系列MCU集成了正交编码器接口，增量编码器可与MCU直接连接而...
It has an early warning interrupt capability and the counter can be frozen in debug mode. SysTick timer This timer is dedicated to real-time operating systems, but could also be used as a standard down counter. It features: ● A 24-bit down counter ● Autoreload capability ● Maskable ...
It has an early warning interrupt capability and the counter can be frozen in debug mode. SysTick timer This timer is dedicated to real-time operating systems, but could also be used as a standard down counter. It features: • A 24-bit down counter • Autoreload capability • Maskable...
STM32F103 Cortex, Flash 64KB, RAM 20KB, ADC 12Bit x 10, Timer 16Bit x 4, 24Bit down Counter, SPI x 2, I2C x 2, USART x 5, USB,CAN,RTC, WDG x 2, LQFP48 Package STM32F103ZET6 Datasheet PDF ST Microelectronics MCU 32Bit ARM Cortex M3 RISC 512KB Flash 2.5V/3.3V 144Pin LQFP...
相反的如果我们从st自带的hal库中打开一个Example,可以看到st的hal库中的时钟设置部分都是放在main函数的开头的。 其实道理是一样的,因为systemInit执行完了后接着就会执行main函数了,所以时钟初始化放在systeminit的末位和放在main的开头是等效的。 好了,开始适配晶振。由于我使用的是12MHz的晶振,通过12MHz*6=72...