IWDG Function In the previous chapter, it was mentioned that standby mode can be woken up through IWDG. The functional block diagram of the Independent Watchdog (IWDG) is shown below. In fact, the IWDG is a decrementing counter. When the value of the counter is reduced to zero, IWDG generates a reset signal, and the […]
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Preface We were operating the SPI, but strange phenomena occurred when the SPI speed exceeded 10MHz and the CPOL/CPHA became mismatched. After researching various methods, we found the trick was in the GPIO settings. Here, we provide detailed instructions for setting the GPIO SPEED SETTING to avoid such issues, which is applicable not only to
GPIO Setting for Different Speed Read More »
Preface IWDG (Independent watchdog) is used to detect and solve faults caused by software errors. When the counter reaches a given timeout value, it triggers an interrupt or generates a system reset. The independent watchdog clock is its dedicated low-speed clock (LSI), so it can continue to work even if the main clock has problems.
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Basic introduction to DMA DMA, short for Direct Memory Access, allows data to be transferred from one address space to another without CPU intervention. It provides high-speed data transfer between external memory or between registers without the need for CPU involvement. DMA transfers can quickly move data without CPU intervention. DMA mapping Since the WB
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Preface Nowadays, MCUs are required to be power-efficient. ST has introduced the L series and the latest U5 series of MCUs for power-saving purposes. This chapter will mainly introduce the operations under various power-saving modes, and provide an example program using the Sleep mode. It will also highlight important points and precautions for customers who
Sleep Low Power Modes For STM32L4 Read More »
Preface With the increasing demand for low-power products, ST has introduced MCUs and corresponding pins for low-power applications. The L series in ST MCU is a dedicated MCU for low power, and some other MCUs also have low-power pins, such as the F7, H7, G0, G4, and WB series. This chapter will provide a detailed
Low Power PWM(Timer) API on STM32WB Read More »
Preface ADC, or Analog-to-Digital Converter, simply converts analog signals into digital signals. Here are some basic terms related to ADC: ADC conversion modes ADC three mode PS:Note: There are usually positive and negative reference voltages in ADC chips. Positive reference voltage is usually connected to VCC and negative reference voltage is usually connected to GND.
ADC introduction on STM32 Read More »
