Hello Ma Hui,
Thank you for your reply, recently i received a mail from a croosmatch engineer, He said to me that it is necessary to change just a file in the sdk provided with the fingerprint With similar functions compatible with k82.
The code is as follows:
* @file spi.c
* Low layer for a communication with TCD50 using a spi interface.
*
* Copyright (C) 2001-2011 AUTHENTEC, Inc.
*
*/
#include "stm32f10x_lib.h" // Definitions of the STM32 library
#include "configuration.h" // Definition of a platform
#include "spi.h" // Spi functions header
#include "tfmerror.h" // Error codes
#include "timer.h"
#include "defines.h"
#define DMA_CHANNEL_ENABLE 0x00000001
#define DMA_CHANNEL_DISABLE 0xFFFFFFFE
/* Function initializes an Spi layer.
*/
PT_STATUS SpiInitialize(void){
//set an SS (CS) pin to 0
GPIO_ResetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
return PT_STATUS_OK;
}
/* Spi layer destructor.
*/
void SpiDestroy(void)
{
}
/** Function tests, if an AWAKE signal is low. If so, a device is considered to be awake.
* @return TRUE, if awake; FALSE otherwise.
**/
bool8 SpiIsAwake(void)
{
bool8 isWake = FALSE;
isWake = (GPIO_ReadInputDataBit(SPI_AWAKE_SIGNAL_GPIO, SPI_AWAKE_SIGNAL_PIN) == COMM_AWAKE_ACTIVE_STATE);
return isWake;
}
/** Function produces a short (approx. 3ms) impulse on a CS line causing a hardware wake up of a TCD device.
**/
void SpiWakeUp()
{
#if (COMM_AWAKE_ACTIVE_STATE == 0)
GPIO_SetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
PT_TimerDelayMilliseconds (3);
GPIO_ResetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
#else
GPIO_ResetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
PT_TimerDelayMilliseconds (3);
GPIO_SetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
#endif //#if (COMM_AWAKE_ACTIVE_STATE == 0)
}
/** Function sends a miniframe(9-bytes) over a spi bus. It set a CS signal to high, starts a clock, transmits a miniframe, stops a clock, and sets a CS signal to low.
* @param pSendBuffer Buffer containing miniframe data sent on a SPI bus (input, size of SPI_PACKET_SIZE).
* @param pReceiveBuffer Buffer, where data comming on a SPI bus are stored (output, size of SPI_PACKET_SIZE).
* @return PT_STATUS_OK.
**/
PT_STATUS SpiSendAndReceiveMiniframe(IN void *pSendBuffer, OUT void *pReceiveBuffer)
{
PT_STATUS status = PT_STATUS_OK;
//set an SS (CS) pin to COMM_AWAKE_ACTIVE_STATE
#if (COMM_AWAKE_ACTIVE_STATE == 0)
GPIO_SetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
#else
GPIO_ResetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
#endif //#if (COMM_AWAKE_ACTIVE_STATE == 0)
#if !defined(TCD50D_TCS1_TCS2)
//wait approx. 10us
PT_TimerDelayMicroseconds(10);
#endif //if !defined(TCD50D_TCS1_TCS2)
//start DMA transfer (Rx direction)
//set memory dst address
DMA1_Channel4->CMAR = (uint32)pReceiveBuffer;
//set buffer size
DMA1_Channel4->CNDTR = SPI_PACKET_SIZE;
//enable DMA1 channel4
DMA1_Channel4->CCR |= DMA_CHANNEL_ENABLE;
//start DMA transfer (Tx direction)
//set memory dst address
DMA1_Channel5->CMAR = (uint32)pSendBuffer;
//set buffer size
DMA1_Channel5->CNDTR = SPI_PACKET_SIZE;
//enable DMA1 channel4
DMA1_Channel5->CCR |= DMA_CHANNEL_ENABLE;
//wait till whole miniframe is received
while(DMA1_Channel4->CNDTR != 0)
{
;
}
// Reset a chip select signal
#if (COMM_AWAKE_ACTIVE_STATE == 0)
GPIO_ResetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
#else
GPIO_SetBits(SPI_CS_SIGNAL_GPIO, SPI_CS_SIGNAL_PIN);
#endif //#if (COMM_AWAKE_ACTIVE_STATE == 0)
// Clear pending DMA RX transfer
DMA1_Channel4->CCR &= DMA_CHANNEL_DISABLE;
// Clear pending DMA TX transfer
DMA1_Channel5->CCR &= DMA_CHANNEL_DISABLE;
return status;
}
I try as well as I can to find the similar function for the k82, But without result until now.
So if you can suggest me some referenceon this topic to advance
thank you
