ST25R911B阅读器和ST25DV04K标签之间如何建立通信呢

大家好，
我需要你的帮助：
我想在 ST25R911B 阅读器和 ST25DV04K 标签之间建立通信。
我能够将数据从阅读器写入转发器，并且还得到一个中断 (XYZ)。现在我想回答读者。我通过 I2C 将数据写入邮箱。当读者阅读邮箱时，我收到超时或无效请求错误。
标签代码：
初始化：

void MX_NFC_Init(void)
{
const ST25DV_PASSWD st25dv_i2c_password = {.MsbPasswd = 0, .LsbPasswd=0};
char txtbuf[] = "Initialize NFC-TagrnReset Mailbox and allow write to EEPROMrn Select NFC Type 5rn";
HAL_UART_Transmit(&huart2, (uint8_t*) txtbuf, sizeof(txtbuf), 100);
/* Init ST25DV driver */
while( NFC04A1_NFCTAG_Init(NFC04A1_NFCTAG_INSTANCE) != NFCTAG_OK );
/* Init GPO */
MX_NFC04A1_GPO_Init();
ST25DV_EN_STATUS MB_mode;
/* If not activated, activate Mailbox, as long as MB is ON EEPROM is not available */
NFC04A1_NFCTAG_ReadMBMode(NFC04A1_NFCTAG_INSTANCE, &MB_mode);
if( MB_mode == ST25DV_DISABLE )
{
ST25DV_I2CSSO_STATUS i2csso;
ST25DV_PASSWD passwd;
/* You need to present password before changing static configuration */
NFC04A1_NFCTAG_ReadI2CSecuritySession_Dyn(NFC04A1_NFCTAG_INSTANCE, &i2csso );
if( i2csso == ST25DV_SESSION_CLOSED )
{
/* if I2C session is closed, present password to open session */
passwd.MsbPasswd = 0; /* Default value for password */
passwd.LsbPasswd = 0; /* change it if password has been modified */
NFC04A1_NFCTAG_PresentI2CPassword(NFC04A1_NFCTAG_INSTANCE, passwd );
}
NFC04A1_NFCTAG_WriteMBMode(NFC04A1_NFCTAG_INSTANCE,ST25DV_ENABLE);
/*enable interrupts (I2C Protection) */
NFC04A1_NFCTAG_ConfigIT(NFC04A1_NFCTAG_INSTANCE,
( ST25DV_GPO_FIELDCHANGE_MASK |
ST25DV_GPO_RFPUTMSG_MASK |
ST25DV_GPO_RFGETMSG_MASK |
ST25DV_GPO_ENABLE_MASK ) );
/* Close session as dynamic register doesn't need open session for modification */
passwd.MsbPasswd = 123;
passwd.LsbPasswd = 123;
NFC04A1_NFCTAG_PresentI2CPassword(NFC04A1_NFCTAG_INSTANCE, passwd );
}
/* Enable Mailbox in dynamique register */
NFC04A1_NFCTAG_SetMBEN_Dyn(NFC04A1_NFCTAG_INSTANCE);
/* Check if Mailbox is available */
NFC04A1_NFCTAG_ReadMBCtrl_Dyn( NFC04A1_NFCTAG_INSTANCE,&mbctrldynstatus );
NfcTag_SelectProtocol(NFCTAG_TYPE5);
/* Check if no NDEF detected, init mem in Tag Type 5 */
if( NfcType5_NDEFDetection( ) != NDEF_OK )
{
CCFileStruct.MagicNumber = NFCT5_MAGICNUMBER_E1_CCFILE;
CCFileStruct.Version = NFCT5_VERSION_V1_0;
CCFileStruct.MemorySize = ( ST25DV_MAX_SIZE / 8 ) & 0xFF;
CCFileStruct.TT5Tag = 0x05;
char txtbuf1[] = {"Initialization NFC Type5 Protocolrn"};
HAL_UART_Transmit(&huart2, (uint8_t*) txtbuf, sizeof(txtbuf), 100);
/* Init of the Type Tag 5 component (M24LR) */
while( NfcType5_TT5Init( ) != NFCTAG_OK );
}
}

处理传入的 GPO（GPOActivated 在 GPO 回调中设置）

void MX_NFC4_NDEF_Process(void)
{
ST25DV_FIELD_STATUS FieldStatus;
uint8_t ITStatus;
/* recognized interrupt */
if( GPOActivated == 1 )
{
/* check if RF-Field changed */ //check return if always on or only at beginning
NFC04A1_NFCTAG_GetRFField_Dyn(NFC04A1_NFCTAG_INSTANCE, &FieldStatus );
/* get all other interrput sources */
NFC04A1_NFCTAG_ReadITSTStatus_Dyn(NFC04A1_NFCTAG_INSTANCE, &ITStatus);
if( ITStatus == ST25DV_ITSTS_DYN_RFGETMSG_MASK)
{
/* read mailbox */
HAL_UART_Transmit(&huart2, "message getrn", 13, 50 );
HAL_Delay(10);
}
if( ITStatus == ST25DV_ITSTS_DYN_RFPUTMSG_MASK)
{
/* read mailbox */
HAL_UART_Transmit(&huart2, "message putrn", 13, 50 );
uint8_t data[50] = {0};
NFC04A1_NFCTAG_ReadMailboxData(NFC04A1_NFCTAG_INSTANCE, &data, 0, 49);
//uint16_t NDEF_ReadText( sRecordInfo_t *pRecordStruct, NDEF_Text_info_t *pText )
HAL_Delay(10);
HAL_UART_Transmit(&huart2, "rnMessage is:rn", 16, 50);
HAL_Delay(10);
HAL_UART_Transmit(&huart2, data, 12, 50);
HAL_Delay(10);
HAL_UART_Transmit(&huart2, "rnrn", 14, 50);
HAL_Delay(10);
ST25DV_MB_CTRL_DYN_STATUS mbctrldynstatus;
/* Check if Mailbox is available */
NFC04A1_NFCTAG_ReadMBCtrl_Dyn( NFC04A1_NFCTAG_INSTANCE,&mbctrldynstatus );
/* Write Data into Mailbox*/
const uint8_t buf[]={"Hello Readerrn"};
int32_t ret = 0;
/* If MB is available, write data */
if( (mbctrldynstatus.HostPutMsg == 0) && (mbctrldynstatus.RfPutMsg == 0) )
{
ret = NFC04A1_NFCTAG_WriteMailboxData( NFC04A1_NFCTAG_INSTANCE, buf, 14 );
__NOP();
}
__NOP();
}
else if( FieldStatus == ST25DV_FIELD_ON )
{
/* power up device */
HAL_UART_Transmit(&huart2, "RF field detectedrn", 20, 50 );
HAL_Delay(10);
}
GPOActivated = 0;
}
}

来自读者的代码：

if( rfalNfcIsDevActivated( rfalNfcGetState() ) )
{
rfalNfcGetActiveDevice( &nfcDevice );
ledsOff();
platformDelay(50);
ndefDemoPrevFeature = 0xFF; /* Force the display of the prompt */
uint8_t devUID[RFAL_NFCV_UID_LEN];
ST_MEMCPY( devUID, nfcDevice->nfcid, nfcDevice->nfcidLen ); /* Copy the UID into local var */
REVERSE_BYTES( devUID, RFAL_NFCV_UID_LEN ); /* Reverse the UID for display purposes */
platformLog("ISO15693/NFC-V card found. UID: %srn", hex2Str(devUID, RFAL_NFCV_UID_LEN));
platformLedOn(PLATFORM_LED_V_PORT, PLATFORM_LED_V_PIN);
/* Try to read a register */
uint8_t addr = 0x00;
uint8_t regcontent[30] = {0x0};
ReturnCode states[10] = {0};
/* read enabled irq*/
states[0] = rfalST25xVPollerReadConfiguration(RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, addr, ®content[0]);
/* check if tag is powered by vcc */
states[1] = rfalST25xVPollerReadDynamicConfiguration(RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, 0x02, ®content[1]);
/* check if MB (fast transfer mode) is enabled */
states[2] = rfalST25xVPollerReadConfiguration(RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, 0x0D, ®content[2]);
states[3] = rfalST25xVPollerReadDynamicConfiguration(RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, 0x0D, ®content[3]);
uint8_t txbuf[30] ={0};
uint8_t msgdata[] = "Hello Tag";
uint16_t len=0;
uint8_t rxbuf[300] ={0};
platformLog("rnrn written into Mailbox rnrn");
/* write into Mailbox */
states[4] = rfalST25xVPollerFastWriteMessage( RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, 11, msgdata, txbuf, 25);
/* read dynamic configuration */
states[3] = rfalST25xVPollerReadDynamicConfiguration(RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, 0x0D, ®content[3]);
/* Read from Mailbox */
states[5] = rfalST25xVPollerFastReadMessage(RFAL_NFCV_REQ_FLAG_DEFAULT,
nfcDevice->dev.nfcv.InvRes.UID, 0, 30, rxbuf, sizeof(rxbuf), &len);
/* Loop until tag is removed from the field */
platformLog("Operation completedrnTag can be removed from the fieldrn");
rfalNfcvPollerInitialize();
while (rfalNfcvPollerInventory( RFAL_NFCV_NUM_SLOTS_1, RFAL_NFCV_UID_LEN * 8U, nfcDevice->dev.nfcv.InvRes.UID, &invRes, &rcvdLen) == ERR_NONE)
{
platformDelay(130);
}
rfalNfcDeactivate( false );
platformDelay( 500 );
state = DEMO_ST_START_DISCOVERY;
}

回帖（1）

田野

2022-12-20 11:09:42

ST25 嵌入式 NFC 库示例默认适用于 NUCLEO-L476RG，因此您必须在 STM32F401RE 上进行移植。
我建议使用 STM32CubeMX 通过正确初始化 SPI 和中断引脚为 STM32F401RE 生成项目，然后手动导入各种源文件和包含文件。还要确保从 FTM 示例（例如 ST25R3916 定义）导入各种定义，但与 NUCLEO-L476RG 相关的定义除外。

更多回帖

张勇

ST25R911B阅读器和ST25DV04K标签之间如何建立通信呢

回帖（1）

田野

相关问答

ST25DV04K：I2C和RF通信不工作怎么解决？

NFC如何增加与ST25DV一侧的距离

cr95hf成功读取数据后，是否可以通过空中发送rf命令到st25dv04k？

ACR122未检测到ST25DV04K

ST25DV64KC-DISCO如何才能与标签通信？

有没有办法使用任何I2C命令检测NFC天线是否连接到ST25DV04K？

如何将PN7160与STM32WL连接以发现、读取和写入ST25DV04KC动态标签？

我可以在没有任何配置或初始化的情况下使用st25dv04k nfc动态标签吗？

是否可以设置密码来保护NFC设备ST25DV04K的写入呢

ST25DV16K和Android 8.0的问题如何解决？

20万+工程师都在用，免费PCB检查工具