Skip to main content
Nunut
Visitor II
May 31, 2023
Question

ISO7816 smart card have ATR only 1 byte 0x3B (ST8024CDR + STM32G030K6TX) missing/not work

  • May 31, 2023
  • 0 replies
  • 1013 views

ST8024CDR

I have problem for reset smart card after smart card return (ATR) can received 1 byte is 0x3B

Parameter

OSC = 4MHz

CLKDDIV = 4

Card is type T0 and support Max speed 5MHz

Code start reset

HAL_GPIO_WritePin(RST_UC_GPIO_Port, RST_UC_Pin, GPIO_PIN_SET);

HAL_GPIO_WritePin(CMDVCC_UC_GPIO_Port, CMDVCC_UC_Pin, GPIO_PIN_RESET);


_legacyfs_online_stmicro_images_0693W00000blCDBQA2.png CH4 <- Clock 1 MHz

CH1 <- VCC

CH2 <- Data

CH3 <- Reset

This topic has been closed for replies.