/* PMU task entry */
void PMU_IndHandler(void)
{
u8 status;
#ifndef DEBUG
/* read pmu interrupt status */
I2C_ReadFrom(PMU_I2C_ADDR(OOL0));
status = I2C_GetByte(I2C_LAST);
/* clear pmu interrupt */
I2C_WriteTo(PMU_I2C_ADDR(OOL2));
I2C_PutByte(status);
#else
/* read interrupt status */
status = I2C_ReadFrom(PMU_I2C_ADDR(OOL0));
puthex(PMU_I2C_ADDR(OOL0));
putch(':');
puthex(status);
putch(',');
status = I2C_GetByte(I2C_LAST);
puthex(status);
putch('\r');
/* clear pmu interrupt */
status = I2C_WriteTo(PMU_I2C_ADDR(OOL2));
puthex(PMU_I2C_ADDR(OOL2));
putch(':');
puthex(status);
putch(',');
status = I2C_PutByte(status);
puthex(status);
putch('\r');
#endif
/* send msg to main loop */
Task_Push(MSG_ID_BATT_IND, status, 0);
}
/**
* @brief I2C read mutiple data
* \param[in] instance instance of i2c moudle
* \param[in] chipAddr i2c slave addr
* \param[in] addr i2c slave register offset
* \param[in] addrLen len of slave register addr(in byte)
* \param[out] buf data buf
* \param[in] len data length
* \retval 0 success
* \retval 1 failure
*/
int I2C_BurstRead(uint32_t instance ,uint8_t chipAddr, uint32_t addr, uint32_t addrLen, uint8_t *buf, uint32_t len)
{
uint8_t *p;
uint8_t err;
p = (uint8_t*)&addr;
err = 0;
chipAddr <<= 1;
I2C_Start();
I2C_SendByte(chipAddr);
err += I2C_WaitAck();
while(addrLen--)
{
I2C_SendByte(*p++);
err += I2C_WaitAck();
}
I2C_Start();
I2C_SendByte(chipAddr+1);
err += I2C_WaitAck();
while(len--)
{
*buf++ = I2C_GetByte();
if(len)
{
I2C_Ack();
}
}
I2C_NAck();
I2C_Stop();
return err;
}
/**
* @brief SCCB(protocol,the same as i2c) read single register value
* \param[in] instance instance of i2c moudle
* \param[in] chipAddr i2c slave addr
* \param[in] addr i2c slave register offset
* \param[out] data data pointer
* @note usually used on i2c sensor devices
* \retval 0 success
* \retval 1 failure
*/
int SCCB_ReadSingleRegister(uint32_t instance, uint8_t chipAddr, uint8_t addr, uint8_t* data)
{
uint8_t err;
uint8_t retry;
retry = 10;
chipAddr <<= 1;
while(retry--)
{
err = 0;
I2C_Start();
I2C_SendByte(chipAddr);
err += I2C_WaitAck();
I2C_SendByte(addr);
err += I2C_WaitAck();
I2C_Stop();
I2C_Start();
I2C_SendByte(chipAddr+1);
err += I2C_WaitAck();
*data = I2C_GetByte();
// err += I2C_WaitAck();
I2C_NAck();
I2C_Stop();
if(!err)
{
break;
}
}
return err;
}
/*********************************************************************//**
* @brief Transmit and Receive data in master mode
* @param[in] I2Cx I2C peripheral selected, should be:
* - LPC_I2C0
* - LPC_I2C1
* - LPC_I2C2
* @param[in] TransferCfg Pointer to a I2C_M_SETUP_Type structure that
* contains specified information about the
* configuration for master transfer.
* @param[in] Opt a I2C_TRANSFER_OPT_Type type that selected for
* interrupt or polling mode.
* @return SUCCESS or ERROR
*
* Note:
* - In case of using I2C to transmit data only, either transmit length set to 0
* or transmit data pointer set to NULL.
* - In case of using I2C to receive data only, either receive length set to 0
* or receive data pointer set to NULL.
* - In case of using I2C to transmit followed by receive data, transmit length,
* transmit data pointer, receive length and receive data pointer should be set
* corresponding.
**********************************************************************/
Status I2C_MasterTransferData(LPC_I2C_TypeDef *I2Cx, I2C_M_SETUP_Type *TransferCfg, \
I2C_TRANSFER_OPT_Type Opt)
{
uint8_t *txdat;
uint8_t *rxdat;
uint32_t CodeStatus;
uint8_t tmp;
// reset all default state
txdat = (uint8_t *) TransferCfg->tx_data;
rxdat = (uint8_t *) TransferCfg->rx_data;
// Reset I2C setup value to default state
TransferCfg->tx_count = 0;
TransferCfg->rx_count = 0;
TransferCfg->status = 0;
if (Opt == I2C_TRANSFER_POLLING){
/* First Start condition -------------------------------------------------------------- */
TransferCfg->retransmissions_count = 0;
retry:
// reset all default state
txdat = (uint8_t *) TransferCfg->tx_data;
rxdat = (uint8_t *) TransferCfg->rx_data;
// Reset I2C setup value to default state
TransferCfg->tx_count = 0;
TransferCfg->rx_count = 0;
CodeStatus = 0;
// Start command
CodeStatus = I2C_Start(I2Cx);
if ((CodeStatus != I2C_I2STAT_M_TX_START) \
&& (CodeStatus != I2C_I2STAT_M_TX_RESTART)){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// save status
TransferCfg->status = CodeStatus;
goto error;
} else {
goto retry;
}
}
/* In case of sending data first --------------------------------------------------- */
if ((TransferCfg->tx_length != 0) && (TransferCfg->tx_data != NULL)){
/* Send slave address + WR direction bit = 0 ----------------------------------- */
CodeStatus = I2C_SendByte(I2Cx, (TransferCfg->sl_addr7bit << 1));
if (CodeStatus != I2C_I2STAT_M_TX_SLAW_ACK){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// save status
TransferCfg->status = CodeStatus | I2C_SETUP_STATUS_NOACKF;
goto error;
} else {
goto retry;
}
}
/* Send a number of data bytes ---------------------------------------- */
while (TransferCfg->tx_count < TransferCfg->tx_length)
{
CodeStatus = I2C_SendByte(I2Cx, *txdat);
if (CodeStatus != I2C_I2STAT_M_TX_DAT_ACK){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// save status
TransferCfg->status = CodeStatus | I2C_SETUP_STATUS_NOACKF;
goto error;
} else {
goto retry;
}
}
txdat++;
TransferCfg->tx_count++;
}
}
/* Second Start condition (Repeat Start) ------------------------------------------- */
if ((TransferCfg->tx_length != 0) && (TransferCfg->tx_data != NULL) \
&& (TransferCfg->rx_length != 0) && (TransferCfg->rx_data != NULL)){
CodeStatus = I2C_Start(I2Cx);
if ((CodeStatus != I2C_I2STAT_M_RX_START) \
&& (CodeStatus != I2C_I2STAT_M_RX_RESTART)){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// Update status
TransferCfg->status = CodeStatus;
goto error;
} else {
goto retry;
}
}
}
/* Then, start reading after sending data -------------------------------------- */
if ((TransferCfg->rx_length != 0) && (TransferCfg->rx_data != NULL)){
/* Send slave address + RD direction bit = 1 ----------------------------------- */
CodeStatus = I2C_SendByte(I2Cx, ((TransferCfg->sl_addr7bit << 1) | 0x01));
if (CodeStatus != I2C_I2STAT_M_RX_SLAR_ACK){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// update status
TransferCfg->status = CodeStatus | I2C_SETUP_STATUS_NOACKF;
goto error;
} else {
goto retry;
}
}
/* Receive a number of data bytes ------------------------------------------------- */
while (TransferCfg->rx_count < TransferCfg->rx_length){
/*
* Note that: if data length is only one, the master should not
* issue an ACK signal on bus after reading to avoid of next data frame
* on slave side
*/
if (TransferCfg->rx_count < (TransferCfg->rx_length - 1)){
// Issue an ACK signal for next data frame
CodeStatus = I2C_GetByte(I2Cx, &tmp, TRUE);
if (CodeStatus != I2C_I2STAT_M_RX_DAT_ACK){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// update status
TransferCfg->status = CodeStatus;
goto error;
} else {
goto retry;
}
}
} else {
// Do not issue an ACK signal
CodeStatus = I2C_GetByte(I2Cx, &tmp, FALSE);
if (CodeStatus != I2C_I2STAT_M_RX_DAT_NACK){
TransferCfg->retransmissions_count++;
if (TransferCfg->retransmissions_count > TransferCfg->retransmissions_max){
// update status
TransferCfg->status = CodeStatus;
goto error;
} else {
goto retry;
}
}
}
*rxdat++ = tmp;
TransferCfg->rx_count++;
}
}
/* Send STOP condition ------------------------------------------------- */
I2C_Stop(I2Cx);
return SUCCESS;
error:
// Send stop condition
I2C_Stop(I2Cx);
return ERROR;
}
else if (Opt == I2C_TRANSFER_INTERRUPT){
// Setup tx_rx data, callback and interrupt handler
tmp = I2C_getNum(I2Cx);
i2cdat[tmp].txrx_setup = (uint32_t) TransferCfg;
// Set direction phase, write first
i2cdat[tmp].dir = 0;
/* First Start condition -------------------------------------------------------------- */
I2Cx->I2CONCLR = I2C_I2CONCLR_SIC;
I2Cx->I2CONSET = I2C_I2CONSET_STA;
I2C_IntCmd(I2Cx, TRUE);
return (SUCCESS);
}
return ERROR;
}
/*********************************************************************//**
* @brief Handle I2C Master states.
* @param[in] I2Cx I2C peripheral selected, should be:
* - I2C_0
* - I2C_1
* - I2C_2
* @param[in] CodeStatus I2C state
* @param[in] TransferCfg Pointer to a I2C_S_SETUP_Type structure that
* contains specified information about the
* configuration for master transfer.
* @param[in] Opt a I2C_TRANSFER_OPT_Type type that selected for
* interrupt or polling mode.
* @return It can be
* - I2C_OK
* -I2C_BYTE_RECV
* -I2C_BYTE_SENT
* -I2C_SEND_END
* -I2C_RECV_END
* - I2C_ERR
* - I2C_NAK_RECV
**********************************************************************/
int32_t I2C_MasterHanleStates(en_I2C_unitId i2cId,
uint32_t CodeStatus,
I2C_M_SETUP_Type *TransferCfg,
I2C_TRANSFER_OPT_Type Opt
)
{
LPC_I2C_TypeDef* I2Cx = I2C_GetPointer(i2cId);
uint8_t *txdat;
uint8_t *rxdat;
uint8_t tmp;
int32_t Ret = I2C_OK;
//get buffer to send/receive
txdat = (uint8_t *) &TransferCfg->tx_data[TransferCfg->tx_count];
rxdat = (uint8_t *) &TransferCfg->rx_data[TransferCfg->rx_count];
switch(CodeStatus)
{
case I2C_I2STAT_M_TX_START:
case I2C_I2STAT_M_TX_RESTART:
//case I2C_I2STAT_M_RX_START:
//case I2C_I2STAT_M_RX_RESTART
// Send data first
if(TransferCfg->tx_count < TransferCfg->tx_length)
{
/* Send slave address + WR direction bit = 0 ----------------------------------- */
//I2C_SendByte(I2Cx, (TransferCfg->sl_addr7bit << 1));///////////////////////////////
I2C_SendByte(I2Cx, (TransferCfg->sl_addr7bit ));
Ret = I2C_BYTE_SENT;
}
else if (TransferCfg->rx_count < TransferCfg->rx_length)
{
/* Send slave address + RD direction bit = 1 ----------------------------------- */
//I2C_SendByte(I2Cx, ((TransferCfg->sl_addr7bit << 1) | 0x01));////////////////
I2C_SendByte(I2Cx, (TransferCfg->sl_addr7bit));
Ret = I2C_BYTE_SENT;
}
// Clear STA bit after the slave address is sent
I2Cx->CONCLR = I2C_I2CONCLR_STAC;
break;
case I2C_I2STAT_M_TX_SLAW_ACK:
case I2C_I2STAT_M_TX_DAT_ACK:
if(TransferCfg->tx_count < TransferCfg->tx_length)
{
I2C_SendByte(I2Cx, *txdat);
txdat++;
TransferCfg->tx_count++;
Ret = I2C_BYTE_SENT;
}
else
{
if(TransferCfg->rx_count >= TransferCfg->rx_length)
{
I2C_Stop(I2Cx, Opt);
}
Ret = I2C_SEND_END;
}
break;
case I2C_I2STAT_M_TX_DAT_NACK:
if(TransferCfg->rx_count >= TransferCfg->rx_length)
{
I2C_Stop(I2Cx, Opt);
}
Ret = I2C_SEND_END;
break;
case I2C_I2STAT_M_RX_ARB_LOST:
case I2C_I2STAT_S_RX_ARB_LOST_M_GENCALL:
case I2C_I2STAT_S_TX_ARB_LOST_M_SLA:
//case I2C_I2STAT_M_TX_ARB_LOST:
I2C_Stop(I2Cx, Opt);
Ret = I2C_ERR;
break;
case I2C_I2STAT_M_RX_SLAR_ACK:
if(TransferCfg->rx_length > 1)
I2Cx->CONSET = I2C_I2CONSET_AA;
else
I2Cx->CONCLR = I2C_I2CONCLR_AAC;
I2Cx->CONCLR = I2C_I2CONCLR_SIC;
Ret = I2C_BYTE_RECV;
break;
case I2C_I2STAT_M_RX_DAT_ACK:
if (TransferCfg->rx_count <TransferCfg->rx_length)
{
if ((TransferCfg->rx_length > 1) && (TransferCfg->rx_count < (TransferCfg->rx_length - 2)))
{
I2C_GetByte(I2Cx, &tmp, TRUE);
Ret = I2C_BYTE_RECV;
}
else // the next byte is the last byte, send NACK instead.
{
I2C_GetByte(I2Cx, &tmp, FALSE);
Ret = I2C_BYTE_RECV;
}
*rxdat++ = tmp;
TransferCfg->rx_count++;
}
else
{
I2C_Stop(I2Cx, Opt);
Ret = I2C_RECV_END;
}
break;
case I2C_I2STAT_M_RX_DAT_NACK:
I2C_GetByte(I2Cx, &tmp, FALSE);
if (TransferCfg->rx_count < TransferCfg->rx_length)
{
*rxdat++ = tmp;
TransferCfg->rx_count++;
}
I2C_Stop(I2Cx, Opt);
Ret = I2C_RECV_END;
break;
case I2C_I2STAT_M_RX_SLAR_NACK:
case I2C_I2STAT_M_TX_SLAW_NACK:
case I2C_I2STAT_BUS_ERROR:
// Send STOP condition
I2C_Stop(I2Cx, Opt);
Ret = I2C_ERR;
break;
/* No status information */
case I2C_I2STAT_NO_INF:
if ((TransferCfg->tx_count <TransferCfg->tx_length)||
(TransferCfg->rx_count <TransferCfg->rx_length))
{
I2C_Stop(I2Cx, Opt);
Ret = I2C_ERR;
}
else
{
Ret = I2C_RECV_END;
}
break;
default:
I2Cx->CONCLR = I2C_I2CONCLR_SIC;
break;
}
return Ret;
}
/* PMU module initialization */
void PMU_Init(void)
{
#ifdef DEBUG
u8 res;
u8 i = 0;
#endif
TRISA2 = 1; /* config RA2/INT as input */
RABPU = 0; /* PORTA/B pull-up enable */
WPUA2 = 1; /* RA2 weak pull-up enable */
INTEDG = 0; /* interrupt on falling edge of INT pin */
INTE = 1; /* RA2/INT external interrupt enable */
GIE = 1; /* enable global interrupt */
#ifndef DEBUG
/* config AS7100 interrupt enable bits */
I2C_WriteTo(PMU_I2C_ADDR(OOL1));
I2C_PutByte(PMU_INT_POWON | PMU_INT_POWOFF | PMU_INT_LVDSTATE | PMU_INT_OPTSTATE);
/* config AS7100 IRQ mode */
I2C_WriteTo(PMU_I2C_ADDR(OOL3));
I2C_PutByte(PMU_IRQ_MODE_PULSE);
/* enable P**N(RESETN) signal output */
I2C_WriteTo(PMU_I2C_ADDR(OOL5));
I2C_PutByte(PMU_PRON_ENABLE);
#else
/* config AS7100 interrupt enable bits */
res = I2C_WriteTo(PMU_I2C_ADDR(OOL1));
puthex(PMU_I2C_ADDR(OOL1));
putch(':');
puthex(res);
putch(',');
res = I2C_PutByte(PMU_INT_POWON | PMU_INT_POWOFF | PMU_INT_LVDSTATE | PMU_INT_OPTSTATE);
puthex(res);
putch('\r');
/* config AS7100 IRQ mode */
res = I2C_WriteTo(PMU_I2C_ADDR(OOL3));
puthex(PMU_I2C_ADDR(OOL3));
putch(':');
puthex(res);
putch(',');
res = I2C_PutByte(PMU_IRQ_MODE_PULSE);
puthex(res);
putch('\r');
/* enable P**N(RESETN) signal output */
res = I2C_WriteTo(PMU_I2C_ADDR(OOL5));
puthex(PMU_I2C_ADDR(OOL5));
putch(':');
puthex(res);
putch(',');
res = I2C_PutByte(PMU_PRON_ENABLE);
puthex(res);
putch('\r');
#endif
#ifdef DEBUG
/* read all register */
for (i = 0; i < 0x10; i++) {
u8 addr = 0x60 | i;
res = I2C_ReadFrom(addr);
puthex(addr);
putch(':');
puthex(res);
putch(',');
res = I2C_GetByte(I2C_LAST);
puthex(res);
putch('\r');
}
#endif
}