It is prescaled before the capture register (ICxPS). Then, an edge detector with polarity selection generates a signal (TIxFPx) which can be used as trigger input by the slave mode controller or as the capture command. The input stage samples the corresponding TIx input to generate a filtered signal TIxF. And also note that every single timer module has multiple (input capture/compare output) channels (3, 4, 6, or whatever found in the datasheet).Įach Capture/Compare channel is built around a capture/compare register (including a shadow register), an input stage for capture (with a digital filter, multiplexing, and Prescaler) and an output stage (with comparator and output control). Here is a brief description of the capture compare channels in STM32 timers modules. Where the timer gets clocked from an internal source and its current value is captured and saved to the input capture register whenever a special event occurs on the input capture channel pin. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network (EPN) and .Īs we’ve discussed in an earlier tutorial, the timer modules can operate a variety of modes one of which is the input capture mode. Logic Analyzer (on ) ( on eBay)Īffiliate Disclosure: When you click on links in this section and make a purchase, this can result in this site earning a commission.FeelTech DDS Function Generator: KKMoon FY6900 (on ) ( on eBay).My Digital Storage Oscilloscope (DSO): Siglent SDS1104 (on ) ( on eBay).Some Extremely Useful Test Equipment For Troubleshooting: ★ Check The Full Course Complete Kit List ST-Link v2 Debugger or ( eBay) QTY Component Name □ □ 2 BreadBoard Amazon eBay 1 LEDs Kit Amazon Amazon eBay 1 Resistors Kit Amazon Amazon eBay 1 Capacitors Kit Amazon Amazon eBay & eBay 2 Jumper Wires Pack Amazon Amazon eBay & eBay 1 9v Battery or DC Power Supply Amazon Amazon Amazon eBay 1 Micro USB Cable Amazon eBay 1 Push Buttons Amazon Amazon eBay 1 USB-TTL Converter or FTDI Chip Amazon Amazon eBay eBay.Blue Pill STM32-F103 (ARM Cortex-M3 72MHz) or ( eBay).Nucleo32-L432KC (ARM Cortex-M4 80MHz) or ( eBay). 4 STM32 Input Capture Mode Frequency Counter Īll the example code/LABs/projects in the course are going to be done using those boards below.3 STM32 Input Capture Frequency Counter.
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