int _I2C_SlaveTransferData(uint8_t * args)
{
uint8_t * arg_ptr;
LPC_I2C_TypeDef* I2Cx;
I2C_S_SETUP_Type* TransferCfg;
I2C_TRANSFER_OPT_Type Opt;
if ((arg_ptr = (uint8_t *) strtok(NULL, " ")) == NULL) return 1;
I2Cx = (LPC_I2C_TypeDef*) strtoul((char *) arg_ptr, NULL, 16);
if ((arg_ptr = (uint8_t *) strtok(NULL, " ")) == NULL) return 1;
TransferCfg = (I2C_S_SETUP_Type*) strtoul((char *) arg_ptr, NULL, 16);
if ((arg_ptr = (uint8_t *) strtok(NULL, " ")) == NULL) return 1;
Opt = (I2C_TRANSFER_OPT_Type) strtoul((char *) arg_ptr, NULL, 16);
sprintf((char *) str, "%x\r\n", (unsigned int) I2C_SlaveTransferData(I2Cx, TransferCfg, Opt));
writeUSBOutString(str);
return 0;
}
/*********************************************************************//**
* @brief Main I2C master and slave program body
**********************************************************************/
int c_entry(void)
{
PINSEL_CFG_Type PinCfg;
I2C_OWNSLAVEADDR_CFG_Type OwnSlavAdr;
I2C_M_SETUP_Type transferMCfg;
I2C_S_SETUP_Type transferSCfg;
uint32_t tempp;
uint8_t *sp, *dp;
// DeInit NVIC and SCBNVIC
NVIC_DeInit();
NVIC_SCBDeInit();
/* Configure the NVIC Preemption Priority Bits:
* two (2) bits of preemption priority, six (6) bits of sub-priority.
* Since the Number of Bits used for Priority Levels is five (5), so the
* actual bit number of sub-priority is three (3)
*/
NVIC_SetPriorityGrouping(0x05);
// Set Vector table offset value
#if (__RAM_MODE__==1)
NVIC_SetVTOR(0x10000000);
#else
NVIC_SetVTOR(0x00000000);
#endif
/* Initialize debug */
debug_frmwrk_init();
print_menu();
/* I2C block ------------------------------------------------------------------- */
/*
* Init I2C pin connect
*/
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
#if ((USEDI2CDEV_M == 0) || (USEDI2CDEV_S == 0))
PinCfg.Funcnum = 1;
PinCfg.Pinnum = 27;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 28;
PINSEL_ConfigPin(&PinCfg);
#endif
#if ((USEDI2CDEV_M == 2) || (USEDI2CDEV_S == 2))
PinCfg.Funcnum = 2;
PinCfg.Pinnum = 10;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 11;
PINSEL_ConfigPin(&PinCfg);
#endif
// Initialize Master I2C peripheral
I2C_Init(I2CDEV_M, 100000);
// Initialize Slave I2C peripheral
I2C_Init(I2CDEV_S, 100000);
/* Set Own slave address for I2C device */
OwnSlavAdr.GeneralCallState = ENABLE;
OwnSlavAdr.SlaveAddrChannel= 0;
OwnSlavAdr.SlaveAddrMaskValue = 0xFF;
OwnSlavAdr.SlaveAddr_7bit = I2CDEV_S_OWN_ADDR;
I2C_SetOwnSlaveAddr(I2CDEV_S, &OwnSlavAdr);
/*
* Note: The master should be set higher priority than
* the slave that let interrupt in master can appear
* in slave's timeout condition.
* A higher interrupt priority has lower number level!!!
*/
/* Configure interrupt for I2C in NVIC of ARM core */
#if ((USEDI2CDEV_M == 0) || (USEDI2CDEV_S == 0))
/* Disable I2C0 interrupt */
NVIC_DisableIRQ(I2C0_IRQn);
#if (USEDI2CDEV_M == 0)
/* preemption = 1, sub-priority = 0 */
NVIC_SetPriority(I2C0_IRQn, ((0x00<<3)|0x01));
#else
/* preemption = 1, sub-priority = 2 */
NVIC_SetPriority(I2C0_IRQn, ((0x02<<3)|0x01));
#endif
#endif /* ((USEDI2CDEV_M == 0) || (USEDI2CDEV_S == 0)) */
#if ((USEDI2CDEV_M == 2) || (USEDI2CDEV_S == 2))
/* Disable I2C2 interrupt */
NVIC_DisableIRQ(I2C2_IRQn);
#if (USEDI2CDEV_M == 2)
/* preemption = 1, sub-priority = 0 */
NVIC_SetPriority(I2C2_IRQn, ((0x00<<3)|0x01));
#else
/* preemption = 1, sub-priority = 2 */
NVIC_SetPriority(I2C2_IRQn, ((0x02<<3)|0x01));
#endif
#endif
/* Enable Master I2C operation */
I2C_Cmd(I2CDEV_M, ENABLE);
/* Enable Slave I2C operation */
I2C_Cmd(I2CDEV_S, ENABLE);
#if 1
/* MASTER SEND DATA TO SLAVE -------------------------------------------------------- */
/* Force complete flag for the first time of running */
complete_S = RESET;
complete_M = RESET;
_DBG_("Master transmit data to slave...");
/* Initialize buffer */
Buffer_Init(0);
/* Start I2C slave device first */
transferSCfg.tx_data = NULL;
transferSCfg.tx_length = 0;
transferSCfg.rx_data = Slave_Buf;
transferSCfg.rx_length = sizeof(Slave_Buf);
transferSCfg.callback = SlaveCallback;
I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_INTERRUPT);
/* Then start I2C master device */
transferMCfg.sl_addr7bit = I2CDEV_S_OWN_ADDR;
transferMCfg.tx_data = Master_Buf;
transferMCfg.tx_length = sizeof(Master_Buf);
transferMCfg.rx_data = NULL;
transferMCfg.rx_length = 0;
transferMCfg.retransmissions_max = 3;
transferMCfg.callback = MasterCallback;
I2C_MasterTransferData(I2CDEV_M, &transferMCfg, I2C_TRANSFER_INTERRUPT);
/* Wait until both of them complete */
while ((complete_M == RESET) || (complete_S == RESET));
// verify data
sp = Master_Buf;
dp = Slave_Buf;
for (tempp = sizeof(Master_Buf); tempp; tempp--){
if(*sp++ != *dp++){
_DBG_("Verify data error!");
}
}
// Success!
if (tempp == 0){
_DBG_("Verify data successfully!");
}
/* MASTER RECEIVE DATA FROM SLAVE -------------------------------------------------------- */
/* Force complete flag for the first time of running */
complete_S = RESET;
complete_M = RESET;
_DBG_("Master read data from slave...");
/* Initialize buffer */
Buffer_Init(1);
/* Start I2C slave device first */
transferSCfg.tx_data = Slave_Buf;
transferSCfg.tx_length = sizeof(Slave_Buf);
transferSCfg.rx_data = NULL;
transferSCfg.rx_length = 0;
transferSCfg.callback = SlaveCallback;
I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_INTERRUPT);
/* Then start I2C master device */
transferMCfg.sl_addr7bit = I2CDEV_S_OWN_ADDR;
transferMCfg.tx_data = NULL;
transferMCfg.tx_length = 0;
transferMCfg.rx_data = Master_Buf;
transferMCfg.rx_length = sizeof(Master_Buf);
transferMCfg.retransmissions_max = 3;
transferMCfg.callback = MasterCallback;
I2C_MasterTransferData(I2CDEV_M, &transferMCfg, I2C_TRANSFER_INTERRUPT);
/* Wait until both of them complete */
while ((complete_M == RESET) || (complete_S == RESET));
// verify data
sp = Master_Buf;
dp = Slave_Buf;
for (tempp = sizeof(Master_Buf); tempp; tempp--){
if(*sp++ != *dp++){
_DBG_("Verify data error!");
}
}
// Success!
if (tempp == 0){
_DBG_("Verify data successfully!");
}
#endif
#if 1
// TEST-----------------------------------------------------------
// Master transmit two bytes, then repeat start and reading from slave
// a number of byte
/* Force complete flag for the first time of running */
complete_S = RESET;
complete_M = RESET;
_DBG_("Master transmit data to slave first, then repeat start and read data from slave...");
/* Initialize buffer */
Buffer_Init(1);
master_test[0] = 0xAA;
master_test[1] = 0x55;
slave_test[0] = 0x00;
slave_test[1] = 0x00;
/* Start I2C slave device first */
transferSCfg.tx_data = Slave_Buf;
transferSCfg.tx_length = sizeof(Slave_Buf);
transferSCfg.rx_data = slave_test;
transferSCfg.rx_length = sizeof(slave_test);
transferSCfg.callback = SlaveCallback;
I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_INTERRUPT);
/* Then start I2C master device */
transferMCfg.sl_addr7bit = I2CDEV_S_OWN_ADDR;
transferMCfg.tx_data = master_test;
transferMCfg.tx_length = sizeof(master_test);
transferMCfg.rx_data = Master_Buf;
transferMCfg.rx_length = sizeof(Master_Buf);
transferMCfg.retransmissions_max = 3;
transferMCfg.callback = MasterCallback;
I2C_MasterTransferData(I2CDEV_M, &transferMCfg, I2C_TRANSFER_INTERRUPT);
/* Wait until both of them complete */
while ((complete_M == RESET) || (complete_S == RESET));
// verify data
sp = Master_Buf;
dp = Slave_Buf;
for (tempp = sizeof(Master_Buf); tempp; tempp--){
if(*sp++ != *dp++){
_DBG_("Verify data error!");
}
}
// Success!
if (tempp == 0){
_DBG_("Verify data successfully!");
}
sp = master_test;
dp = slave_test;
for (tempp = sizeof(master_test); tempp; tempp--){
if(*sp++ != *dp++){
_DBG_("Verify data error!");
}
}
// Success!
if (tempp == 0){
_DBG_("Verify data successfully!");
}
#endif
while (1){
tempp++;
}
/* Loop forever */
while(1);
return 1;
}
/*********************************************************************//**
* @brief Main I2C master and slave program body
**********************************************************************/
int c_entry(void)
{
PINSEL_CFG_Type PinCfg;
I2C_OWNSLAVEADDR_CFG_Type OwnSlavAdr;
I2C_S_SETUP_Type transferSCfg;
uint32_t tempp;
uint8_t *pdat;
// DeInit NVIC and SCBNVIC
NVIC_DeInit();
NVIC_SCBDeInit();
/* Configure the NVIC Preemption Priority Bits:
* two (2) bits of preemption priority, six (6) bits of sub-priority.
* Since the Number of Bits used for Priority Levels is five (5), so the
* actual bit number of sub-priority is three (3)
*/
NVIC_SetPriorityGrouping(0x05);
// Set Vector table offset value
#if (__RAM_MODE__==1)
NVIC_SetVTOR(0x10000000);
#else
NVIC_SetVTOR(0x00000000);
#endif
/* Initialize debug */
debug_frmwrk_init();
print_menu();
/* I2C block ------------------------------------------------------------------- */
/*
* Init I2C pin connect
*/
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
#if ((USEDI2CDEV_S == 0))
PinCfg.Funcnum = 1;
PinCfg.Pinnum = 27;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 28;
PINSEL_ConfigPin(&PinCfg);
#endif
#if ((USEDI2CDEV_S == 2))
PinCfg.Funcnum = 2;
PinCfg.Pinnum = 10;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 11;
PINSEL_ConfigPin(&PinCfg);
#endif
// Initialize Slave I2C peripheral
I2C_Init(I2CDEV_S, 100000);
/* Set Own slave address for I2C device */
OwnSlavAdr.GeneralCallState = ENABLE;
OwnSlavAdr.SlaveAddrChannel= 0;
OwnSlavAdr.SlaveAddrMaskValue = 0xFF;
OwnSlavAdr.SlaveAddr_7bit = I2CDEV_S_OWN_ADDR;
I2C_SetOwnSlaveAddr(I2CDEV_S, &OwnSlavAdr);
/* Enable Slave I2C operation */
I2C_Cmd(I2CDEV_S, ENABLE);
_DBG_("Press '1' to start");
while (_DG != '1');
/* Reading -------------------------------------------------------- */
_DBG_("Start Reading...");
/* Initialize buffer */
Buffer_Init(0);
/* Start I2C slave device first */
transferSCfg.tx_data = NULL;
transferSCfg.tx_length = 0;
transferSCfg.rx_data = Slave_Buf;
transferSCfg.rx_length = sizeof(Slave_Buf);
I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_POLLING);
pdat = Slave_Buf;
// Verify
for (tempp = 0; tempp < sizeof(Slave_Buf); tempp++){
if (*pdat++ != tempp){
_DBG_("Verify error");
break;
}
}
if (tempp == sizeof(Slave_Buf)){
_DBG_("Verify successfully");
}
/* Transmit -------------------------------------------------------- */
_DBG_("Start Transmit...");
/* Initialize buffer */
Buffer_Init(1);
/* Start I2C slave device first */
transferSCfg.tx_data = Slave_Buf;
transferSCfg.tx_length = sizeof(Slave_Buf);
transferSCfg.rx_data = NULL;
transferSCfg.rx_length = 0;
I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_POLLING);
_DBG_("Complete!");
#if 1
/* Receive and transmit -------------------------------------------------------- */
_DBG_("Start Receive, wait for repeat start and transmit...");
/* Initialize buffer */
Buffer_Init(1);
slave_test[0] = 0xAA;
slave_test[1] = 0x55;
/* Start I2C slave device first */
transferSCfg.tx_data = Slave_Buf;
transferSCfg.tx_length = sizeof(Slave_Buf);
transferSCfg.rx_data = slave_test;
transferSCfg.rx_length = sizeof(slave_test);
I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_POLLING);
_DBG_("Receive Data:");
_DBH(slave_test[0]); _DBG_("");
_DBH(slave_test[1]); _DBG_("");
_DBG_("Complete!");
#endif
/* Loop forever */
while(1);
return 1;
}
