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Design (E) / Ontwerp (E) - 314

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[2 Marks // 2 Punte]

Match the given Git command to it's corresponding description from the provided options. // Pas die gegewe Git-opdrag by die ooreenstemmende beskrywing uit die verskafte opsies.

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An STM32 MCU runs at 84 MHz.

An LMT01 sensor outputs pulses at 88 kHz.

The LMT01 is connected to a GPIO pin as an external interrupt on the STM32 (rising edge triggered)

 

How many full MCU clock cycles occur during one LMT01 sensor pulse period?

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'n STM32 MCU loop teen 84 MHz. 'n LMT01-sensor gee pulse teen 88 kHz uit. Die LMT01 is aan 'n GPIO-pen gekoppel as 'n eksterne onderbreking op die STM32 (stygende rand geaktiveer). Hoeveel volle MCU-kloksiklusse vind plaas gedurende een LMT01-sensorpulsperiode?
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[2 marks / 2 punte]

You tested your project on your bench using 9V from the bench supply and the USB cable connected to a terminal program set to 8E1 and 57600 BAUD. You got the correct system responses during these tests. When you demo your board, there is no communication between your device and the teststation. Mark all of the following options that could cause the problem.

Jy het jou projek op jou bank getoets met 9V vanaf die banktoevoer en die USB-kabel gekoppel aan 'n terminaalprogram wat op 8E1 en 57600 BAUD gestel is. Jy het die korrekte antwoorde van jou stelsel tydens hierdie toetse gekry. Wanneer jy jou bord demonstreer, is daar geen kommunikasie tussen jou toestel en die toetsstasie nie. Merk al die volgende opsies wat die probleem kan veroorsaak.

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[2 Marks / 2 Punte]

For your D2 LED used in the project, what is the primary design current limit to still have 3.3V across the LED and resistor combination?

Vir jou D2 LED wat in die projek gebruik word, wat is die primêre ontwerpstroomlimiet om steeds 3.3V oor die LED en resistor kombinasie te hê?

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[2 marks / 2 punte]

A UART port is configured to operate at 57600 baud, with 8-bit data, one start bit and one stop bit, and even parity bit. What is the maximum data transfer rate on the channel, in bytes per second (rounded to a full byte)?

'n UART poort word opgestel vir dataoordrag teen 57600 baud, met 8 databisse, een begin- en een stop-bis en ewe pariteitsbis. Wat is die maksimum dataoordragtempo op die kanaal, in heel grepe per sekonde (gerond tot 'n vol greep)?

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