How to migrate project NFC5 v1.3 polling from STM43F401 to STM32F072?

Forum|Forum|7 years ago
October 12, 2018
1 reply
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I generated a new cube project, included everything what nfc reader needed(like the sample project for 401), I modified the platform.h, the SPI is working, but its a bit confusing, because if I use HSI the reading is freezing in demoPollNFCA() - without any card. If I use the 072 with 48Mhz HSI the polling works fine but if i put a card in front of the reader I get a hardfault ISR..

So the ST25 init succeeded, the SPI and the interrupts are working. Maybe there is some problem with timings, (like NFC's GP or SW IT..)

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Best answer by Ulysses HERNIOSUS

Hi,

you are most likely hit by a limitation of the STM32F0 HAL SPI drivers: They cannot operate on non-16-bit aligned 8-bit pointers. To completely verify please set USE_FULL_ASSERT to 1...

As solution I can only recommend tweaking the HAL driver, by e.g.

<< *((uint16_t *)pRxData) = hspi->Instance->DR;

>> uint16_t temp;

>> temp = hspi->Instance->DR;

>> *((uint8_t *)pRxData) = temp & 0xff;

>> *(((uint8_t *)pRxData)+1) = temp >> 8;

This shows only receiving side, similar for sending side.

Regards, Ulysses

Ulysses HERNIOSUSBest answer

ST Technical Moderator

Hi,