/**
******************************************************************************
* @file USART/Smartcard/main.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "platform_config.h"
/* Private define ------------------------------------------------------------*/
#define T0_PROTOCOL 0x00 /* T0 PROTOCOL */
#define SETUP_LENGHT 20
#define HIST_LENGHT 20
#define SC_Receive_Timeout 0x4000 /* direction to reader */
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup USART_Smartcard
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* ATR STRUCTURE - ANSWER TO RESET */
typedef struct
{
uint8_t TS; /* Bit Convention */
uint8_t T0; /* High Nibble = N. of setup byte; low nibble = N. of historical byte */
uint8_t T[SETUP_LENGHT]; /* Setup array */
uint8_t H[HIST_LENGHT]; /* Historical array */
uint8_t Tlenght; /* Setup array dimension */
uint8_t Hlenght; /* Historical array dimension */
} SC_ATR;
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
SC_ATR SC_A2R;
__IO uint32_t index = 0, Counter = 0;
volatile TestStatus ATRDecodeStatus = FAILED;
__IO uint32_t CardInserted = 0, CardProtocol = 1;
__IO uint8_t DST_Buffer[50]= {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void EXTI_Configuration(void);
void NVIC_Configuration(void);
uint8_t SC_decode_Answer2reset(__IO uint8_t *card);
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
/* Configure the EXTI Controller */
EXTI_Configuration();
/* SC_USART configuration ----------------------------------------------------*/
/* SC_USART configured as follow:
- Word Length = 9 Bits
- 0.5 Stop Bit
- Even parity
- BaudRate = 12096 baud
- Hardware flow control disabled (RTS and CTS signals)
- Tx and Rx enabled
- USART Clock enabled
- USART CPOL Low
- USART CPHA on first edge
- USART Last Bit Clock Enabled
*/
/* SC_USART Clock set to 4.5MHz (PCLK1 = 36 MHZ / 8) */
USART_SetPrescaler(SC_USART, 0x04);
/* SC_USART Guard Time set to 2 Bit */
USART_SetGuardTime(SC_USART, 0x2);
USART_ClockInitStructure.USART_Clock = USART_Clock_Enable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_1Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Enable;
USART_ClockInit(SC_USART, &USART_ClockInitStructure);
USART_InitStructure.USART_BaudRate = 12096;
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
USART_InitStructure.USART_StopBits = USART_StopBits_1_5;
USART_InitStructure.USART_Parity = USART_Parity_Even;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_Init(SC_USART, &USART_InitStructure);
/* Enable the SC_USART Parity Error Interrupt */
USART_ITConfig(SC_USART, USART_IT_PE, ENABLE);
/* Enable SC_USART */
USART_Cmd(SC_USART, ENABLE);
/* Enable the NACK Transmission */
USART_SmartCardNACKCmd(SC_USART, ENABLE);
/* Enable the Smartcard Interface */
USART_SmartCardCmd(SC_USART, ENABLE);
/* Loop while no Smartcard is detected */
while(CardInserted == 0)
{
}
/* Read Smartcard ATR response */
for(index = 0; index < 40; index++, Counter = 0)
{
while((USART_GetFlagStatus(SC_USART, USART_FLAG_RXNE) == RESET) && (Counter != SC_Receive_Timeout))
{
Counter++;
}
if(Counter != SC_Receive_Timeout)
{
DST_Buffer[index] = USART_ReceiveData(SC_USART);
}
}
/* Decode ATR */
CardProtocol = SC_decode_Answer2reset(DST_Buffer);
/* Test if the inserted card is ISO7816-3 T=0 compatible */
if(CardProtocol == 0)
{
/* Inserted card is ISO7816-3 T=0 compatible */
ATRDecodeStatus = PASSED;
}
else
{
/* Inserted Smartcard is not ISO7816-3 T=0 compatible */
ATRDecodeStatus = FAILED;
}
while (1)
{
}
}
/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
void RCC_Configuration(void)
{
/* Enable GPIO_3_5V, SC_USART_GPIO_CLK, GPIO_CMDVCC, GPIO_RESET, GPIO_OFF and
AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_3_5V | SC_USART_GPIO_CLK | RCC_APB2Periph_RESET |
RCC_APB2Periph_CMDVCC | RCC_APB2Periph_OFF | RCC_APB2Periph_AFIO, ENABLE);
/* Enable SC_USART clocks */
RCC_APB1PeriphClockCmd(SC_USART_CLK, ENABLE);
}
/**
* @brief Configures the different GPIO ports.
* @param None
* @retval None
*/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
#ifdef USE_STM3210C_EVAL
/* Enable the USART3 Pins Software Full Remapping */
GPIO_PinRemapConfig(GPIO_FullRemap_USART3, ENABLE);
#endif
/* Configure SC_USART CK as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = SC_USART_ClkPin;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(SC_USART_GPIO, &GPIO_InitStructure);
/* Configure SC_USART Tx as alternate function open-drain */
GPIO_InitStructure.GPIO_Pin = SC_USART_TxPin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(SC_USART_GPIO, &GPIO_InitStructure);
/* Configure Smartcard Reset */
GPIO_InitStructure.GPIO_Pin = SC_RESET;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIO_RESET, &GPIO_InitStructure);
/* Set RSTIN HIGH */
GPIO_SetBits(GPIO_RESET, SC_RESET);
/* Configure Smartcard 3/5V */
GPIO_InitStructure.GPIO_Pin = SC_3_5V;
GPIO_Init(GPIO_3_5V, &GPIO_InitStructure);
/* Select 5 V */
GPIO_SetBits(GPIO_3_5V, SC_3_5V);
/* Configure Smartcard CMDVCC */
GPIO_InitStructure.GPIO_Pin = SC_CMDVCC;
GPIO_Init(GPIO_CMDVCC, &GPIO_InitStructure);
/* Select Smartcard CMDVCC */
GPIO_SetBits(GPIO_CMDVCC, SC_CMDVCC);
/* Select Smartcard OFF */
GPIO_InitStructure.GPIO_Pin = SC_OFF;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIO_OFF, &GPIO_InitStructure);
}
/**
* @brief Configures the External Interrupts controller.
* @param None
* @retval None
*/
void EXTI_Configuration(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
/* Smartcard OFF */
GPIO_EXTILineConfig(SC_PortSource, SC_PinSource);
EXTI_StructInit(&EXTI_InitStructure);
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_Line = SC_EXTI;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Clear SC EXTI Line Pending Bit */
EXTI_ClearITPendingBit(SC_EXTI);
}
/**
* @brief Configures the nested vectored interrupt controller.
* @param None
* @retval None
*/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
/* Clear the SC_EXTI IRQ Pending Bit */
NVIC_ClearPendingIRQ(SC_EXTI_IRQ);
NVIC_InitStructure.NVIC_IRQChannel = SC_EXTI_IRQ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = SC_USART_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @brief Decode the Card ATR Response.
* @param card: pointer to the buffer containing the Card ATR.
* @retval Card protocol
*/
uint8_t SC_decode_Answer2reset(__IO uint8_t *card)
{
uint32_t i = 0, flag = 0, buf = 0, protocol = 0;
SC_A2R.TS = 0;
SC_A2R.T0 = 0;
for (i = 0; i < SETUP_LENGHT; i++)
{
SC_A2R.T[i] = 0;
}
for (i = 0;i < HIST_LENGHT; i++)
{
SC_A2R.H[i] = 0;
}
SC_A2R.Tlenght = 0;
SC_A2R.Hlenght = 0;
SC_A2R.TS = card[0]; /* INITIAL CHARACTER */
SC_A2R.T0 = card[1]; /* FORMAT CHARACTER */
SC_A2R.Hlenght = SC_A2R.T0 & 0x0F;
if((SC_A2R.T0 & 0x80) == 0x80) flag = 1;
for(i = 0; i < 4; i++)
{
SC_A2R.Tlenght = SC_A2R.Tlenght + (((SC_A2R.T0 & 0xF0) >> (4 + i)) & 0x1);
}
for(i = 0; i < SC_A2R.Tlenght; i++)
{
SC_A2R.T[i] = card[i + 2];
}
protocol = SC_A2R.T[SC_A2R.Tlenght - 1] & 0x0F;
while(flag)
{
if ((SC_A2R.T[SC_A2R.Tlenght-1] & 0x80)== 0x80)
{
flag = 1;
}
else
{
flag = 0;
}
buf = SC_A2R.Tlenght;
SC_A2R.Tlenght = 0;
for(i = 0; i < 4; i++)
{
SC_A2R.Tlenght = SC_A2R.Tlenght + (((SC_A2R.T[buf - 1] & 0xF0) >> (4 + i)) & 0x1);
}
for(i = 0; i < SC_A2R.Tlenght; i++)
{
SC_A2R.T[buf + i] = card[i + 2 + buf];
}
SC_A2R.Tlenght += buf;
}
for(i = 0;i < SC_A2R.Hlenght; i++)
{
SC_A2R.H[i] = card[i + 2 + SC_A2R.Tlenght];
}
return ((uint8_t)protocol);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/