125 k, RFID. The STM32+ U2270B. Read and write the U2270B is a bipolar integrated circuits.

code
....\RVMDK
....\.....\JLink Regs CM3.txt
....\.....\JLinkSettings.ini
....\.....\XF_RFID_125K.uvopt
....\.....\XF_RFID_125K.uvproj
....\.....\list
....\.....\obj
....\.....\...\XF_RFID_125K.hex
....\keilkilll.bat
....\src
....\...\125KRD_Driver
....\...\.............\125KRD_Driver.c
....\...\.............\125KRD_Driver.h
....\...\AT45DB321D
....\...\..........\AT45DB321D_Driver.c
....\...\..........\AT45DB321D_Driver.h
....\...\BEEP
....\...\....\Beep_Driver.c
....\...\....\Beep_Driver.h
....\...\CRC
....\...\...\crc.c
....\...\...\crc.h
....\...\DELAY
....\...\.....\delay.c
....\...\.....\delay.h
....\...\IcCard
....\...\......\ic_card.c
....\...\......\ic_card.h
....\...\Interrupts
....\...\..........\stm32f10x_it.c
....\...\KEY
....\...\...\Key.c
....\...\...\Key.h
....\...\LED
....\...\...\Leds.c
....\...\...\Leds.h
....\...\Lock
....\...\....\lock.c
....\...\....\lock.h
....\...\NFC
....\...\...\nfc.c
....\...\...\nfc.h
....\...\NRF24L01
....\...\........\24l01.c
....\...\........\24l01.h
....\...\PublicFuc.c
....\...\PublicFuc.h
....\...\Read_me.txt
....\...\SPI
....\...\...\spi.c
....\...\...\spi.h
....\...\STM32Lib
....\...\........\StartUp
....\...\........\.......\startup_stm32f10x_hd.s
....\...\........\.......\startup_stm32f10x_ld.s
....\...\........\.......\startup_stm32f10x_md.s
....\...\........\core_cm3.c
....\...\........\core_cm3.h
....\...\........\misc.c
....\...\........\misc.h
....\...\........\stm32f10x.h
....\...\........\stm32f10x_adc.c
....\...\........\stm32f10x_adc.h
....\...\........\stm32f10x_bkp.c
....\...\........\stm32f10x_bkp.h
....\...\........\stm32f10x_can.c
....\...\........\stm32f10x_can.h
....\...\........\stm32f10x_cec.c
....\...\........\stm32f10x_cec.h
....\...\........\stm32f10x_conf.h
....\...\........\stm32f10x_crc.c
....\...\........\stm32f10x_crc.h
....\...\........\stm32f10x_dac.c
....\...\........\stm32f10x_dac.h
....\...\........\stm32f10x_dbgmcu.c
....\...\........\stm32f10x_dbgmcu.h
....\...\........\stm32f10x_dma.c
....\...\........\stm32f10x_dma.h
....\...\........\stm32f10x_exti.c
....\...\........\stm32f10x_exti.h
....\...\........\stm32f10x_flash.c
....\...\........\stm32f10x_flash.h
....\...\........\stm32f10x_fsmc.c
....\...\........\stm32f10x_fsmc.h
....\...\........\stm32f10x_gpio.c
....\...\........\stm32f10x_gpio.h
....\...\........\stm32f10x_i2c.c
....\...\........\stm32f10x_i2c.h
....\...\........\stm32f10x_iwdg.c
....\...\........\stm32f10x_iwdg.h
....\...\........\stm32f10x_pwr.c
....\...\........\stm32f10x_pwr.h
....\...\........\stm32f10x_rcc.c
....\...\........\stm32f10x_rcc.h
....\...\........\stm32f10x_rtc.c
....\...\........\stm32f10x_rtc.h
....\...\........\stm32f10x_sdio.c
....\...\........\stm32f10x_sdio.h
....\...\........\stm32f10x_spi.c

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