2016-10-21 13:15:47 +00:00
|
|
|
/************************************************************************************//**
|
|
|
|
* \file Demo\ARMCM4_XMC4_XCM4700_Relax_Kit_GCC\Prog\boot.c
|
|
|
|
* \brief Demo program bootloader interface source file.
|
|
|
|
* \ingroup Prog_ARMCM4_XMC4_XCM4700_Relax_Kit_GCC
|
|
|
|
* \internal
|
|
|
|
*----------------------------------------------------------------------------------------
|
|
|
|
* C O P Y R I G H T
|
|
|
|
*----------------------------------------------------------------------------------------
|
|
|
|
* Copyright (c) 2016 by Feaser http://www.feaser.com All rights reserved
|
|
|
|
*
|
|
|
|
*----------------------------------------------------------------------------------------
|
|
|
|
* L I C E N S E
|
|
|
|
*----------------------------------------------------------------------------------------
|
|
|
|
* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License as published by the Free
|
|
|
|
* Software Foundation, either version 3 of the License, or (at your option) any later
|
|
|
|
* version.
|
|
|
|
*
|
|
|
|
* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You have received a copy of the GNU General Public License along with OpenBLT. It
|
|
|
|
* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
|
|
|
|
*
|
|
|
|
* \endinternal
|
|
|
|
****************************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************************
|
|
|
|
* Include files
|
|
|
|
****************************************************************************************/
|
|
|
|
#include "header.h" /* generic header */
|
|
|
|
#include "xmc_gpio.h" /* GPIO module */
|
2016-10-23 10:52:46 +00:00
|
|
|
#include "xmc_uart.h" /* UART driver header */
|
|
|
|
#include "xmc_can.h" /* CAN driver header */
|
2016-10-21 13:15:47 +00:00
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************************************
|
|
|
|
* Function prototypes
|
|
|
|
****************************************************************************************/
|
|
|
|
#if (BOOT_COM_UART_ENABLE > 0)
|
|
|
|
static void BootComUartInit(void);
|
|
|
|
static void BootComUartCheckActivationRequest(void);
|
|
|
|
#endif
|
2016-10-23 10:52:46 +00:00
|
|
|
#if (BOOT_COM_CAN_ENABLE > 0)
|
|
|
|
static void BootComCanInit(void);
|
|
|
|
static void BootComCanCheckActivationRequest(void);
|
|
|
|
#endif
|
2016-10-21 13:15:47 +00:00
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Initializes the communication interface.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
void BootComInit(void)
|
|
|
|
{
|
|
|
|
#if (BOOT_COM_UART_ENABLE > 0)
|
|
|
|
BootComUartInit();
|
|
|
|
#endif
|
2016-10-23 10:52:46 +00:00
|
|
|
#if (BOOT_COM_CAN_ENABLE > 0)
|
|
|
|
BootComCanInit();
|
|
|
|
#endif
|
2016-10-21 13:15:47 +00:00
|
|
|
} /*** end of BootComInit ***/
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Receives the CONNECT request from the host, which indicates that the
|
|
|
|
** bootloader should be activated and, if so, activates it.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
void BootComCheckActivationRequest(void)
|
|
|
|
{
|
|
|
|
#if (BOOT_COM_UART_ENABLE > 0)
|
|
|
|
BootComUartCheckActivationRequest();
|
|
|
|
#endif
|
2016-10-23 10:52:46 +00:00
|
|
|
#if (BOOT_COM_CAN_ENABLE > 0)
|
|
|
|
BootComCanCheckActivationRequest();
|
|
|
|
#endif
|
2016-10-21 13:15:47 +00:00
|
|
|
} /*** end of BootComCheckActivationRequest ***/
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Bootloader activation function.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
void BootActivate(void)
|
|
|
|
{
|
|
|
|
/* perform software reset to activate the bootoader again */
|
|
|
|
NVIC_SystemReset();
|
|
|
|
} /*** end of BootActivate ***/
|
|
|
|
|
|
|
|
|
|
|
|
#if (BOOT_COM_UART_ENABLE > 0)
|
|
|
|
/****************************************************************************************
|
|
|
|
* U N I V E R S A L A S Y N C H R O N O U S R X T X I N T E R F A C E
|
|
|
|
****************************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************************
|
|
|
|
* Function prototypes
|
|
|
|
****************************************************************************************/
|
|
|
|
static unsigned char UartReceiveByte(unsigned char *data);
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Initializes the UART communication interface.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
static void BootComUartInit(void)
|
|
|
|
{
|
|
|
|
XMC_GPIO_CONFIG_t rx_config;
|
|
|
|
XMC_GPIO_CONFIG_t tx_config;
|
|
|
|
XMC_UART_CH_CONFIG_t uart_config;
|
|
|
|
|
|
|
|
/* set configuration and initialize UART channel */
|
|
|
|
uart_config.baudrate = BOOT_COM_UART_BAUDRATE;
|
|
|
|
uart_config.data_bits = 8;
|
|
|
|
uart_config.frame_length = 8;
|
|
|
|
uart_config.stop_bits = 1;
|
|
|
|
uart_config.oversampling = 16;
|
|
|
|
uart_config.parity_mode = XMC_USIC_CH_PARITY_MODE_NONE;
|
|
|
|
XMC_UART_CH_Init(XMC_UART0_CH0, &uart_config);
|
|
|
|
/* initialize UART Rx pin */
|
|
|
|
rx_config.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
|
|
|
|
rx_config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
|
|
|
|
rx_config.output_strength = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE;
|
|
|
|
XMC_GPIO_Init(P1_4, &rx_config);
|
|
|
|
/* initialize UART Tx pin */
|
|
|
|
tx_config.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT2;
|
|
|
|
tx_config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
|
|
|
|
tx_config.output_strength = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE;
|
|
|
|
XMC_GPIO_Init(P1_5, &tx_config);
|
|
|
|
/* set input source path to DXnB to connect P1_4 to ASC Receive. note that this
|
|
|
|
* function must be called after XMC_UART_CH_Init(), which is called when initializing
|
|
|
|
* the bootloader core with BootInit().
|
|
|
|
*/
|
|
|
|
XMC_USIC_CH_SetInputSource(XMC_UART0_CH0, XMC_USIC_CH_INPUT_DX0, 1U);
|
|
|
|
/* configure small transmit and receive FIFO */
|
|
|
|
XMC_USIC_CH_TXFIFO_Configure(XMC_UART0_CH0, 16U, XMC_USIC_CH_FIFO_SIZE_16WORDS, 1U);
|
|
|
|
XMC_USIC_CH_RXFIFO_Configure(XMC_UART0_CH0, 0U, XMC_USIC_CH_FIFO_SIZE_16WORDS, 1U);
|
|
|
|
/* start UART */
|
|
|
|
XMC_UART_CH_Start(XMC_UART0_CH0);
|
|
|
|
} /*** end of BootComUartInit ***/
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Receives the CONNECT request from the host, which indicates that the
|
|
|
|
** bootloader should be activated and, if so, activates it.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
static void BootComUartCheckActivationRequest(void)
|
|
|
|
{
|
|
|
|
static unsigned char xcpCtoReqPacket[BOOT_COM_UART_RX_MAX_DATA+1];
|
|
|
|
static unsigned char xcpCtoRxLength;
|
|
|
|
static unsigned char xcpCtoRxInProgress = 0;
|
|
|
|
|
|
|
|
/* start of cto packet received? */
|
|
|
|
if (xcpCtoRxInProgress == 0)
|
|
|
|
{
|
|
|
|
/* store the message length when received */
|
|
|
|
if (UartReceiveByte(&xcpCtoReqPacket[0]) == 1)
|
|
|
|
{
|
|
|
|
/* indicate that a cto packet is being received */
|
|
|
|
xcpCtoRxInProgress = 1;
|
|
|
|
|
|
|
|
/* reset packet data count */
|
|
|
|
xcpCtoRxLength = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* store the next packet byte */
|
|
|
|
if (UartReceiveByte(&xcpCtoReqPacket[xcpCtoRxLength+1]) == 1)
|
|
|
|
{
|
|
|
|
/* increment the packet data count */
|
|
|
|
xcpCtoRxLength++;
|
|
|
|
|
|
|
|
/* check to see if the entire packet was received */
|
|
|
|
if (xcpCtoRxLength == xcpCtoReqPacket[0])
|
|
|
|
{
|
|
|
|
/* done with cto packet reception */
|
|
|
|
xcpCtoRxInProgress = 0;
|
|
|
|
|
|
|
|
/* check if this was an XCP CONNECT command */
|
|
|
|
if ((xcpCtoReqPacket[1] == 0xff) && (xcpCtoReqPacket[2] == 0x00))
|
|
|
|
{
|
|
|
|
/* connection request received so start the bootloader */
|
|
|
|
BootActivate();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} /*** end of BootComUartCheckActivationRequest ***/
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Receives a communication interface byte if one is present.
|
|
|
|
** \param data Pointer to byte where the data is to be stored.
|
|
|
|
** \return 1 if a byte was received, 0 otherwise.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
static unsigned char UartReceiveByte(unsigned char *data)
|
|
|
|
{
|
|
|
|
if (XMC_USIC_CH_RXFIFO_IsEmpty(XMC_UART0_CH0) == 0)
|
|
|
|
{
|
|
|
|
/* retrieve and store the newly received byte */
|
|
|
|
*data = (unsigned char)XMC_UART_CH_GetReceivedData(XMC_UART0_CH0);
|
|
|
|
/* all done */
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
/* still here to no new byte received */
|
|
|
|
return 0;
|
|
|
|
} /*** end of UartReceiveByte ***/
|
|
|
|
#endif /* BOOT_COM_UART_ENABLE > 0 */
|
|
|
|
|
|
|
|
|
2016-10-23 10:52:46 +00:00
|
|
|
#if (BOOT_COM_CAN_ENABLE > 0)
|
|
|
|
/****************************************************************************************
|
|
|
|
* C O N T R O L L E R A R E A N E T W O R K I N T E R F A C E
|
|
|
|
****************************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************************
|
|
|
|
* Local data declarations
|
|
|
|
****************************************************************************************/
|
|
|
|
/** \brief Receive message object data structure. */
|
|
|
|
static XMC_CAN_MO_t receiveMsgObj;
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Initializes the CAN communication interface.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
static void BootComCanInit(void)
|
|
|
|
{
|
|
|
|
XMC_GPIO_CONFIG_t rx_can_config;
|
|
|
|
XMC_GPIO_CONFIG_t tx_can_config;
|
|
|
|
unsigned char byteIdx;
|
|
|
|
unsigned long canModuleFreqHz;
|
|
|
|
XMC_CAN_NODE_NOMINAL_BIT_TIME_CONFIG_t baud;
|
|
|
|
|
|
|
|
/* decide on fCAN frequency. it should be in the 5-120MHz range. according to the
|
|
|
|
* datasheet, it must be at least 12MHz if 1 node (channel) is used with up to
|
|
|
|
* 16 message objects. This is sufficient for this CAN driver.
|
|
|
|
*/
|
|
|
|
canModuleFreqHz = XMC_SCU_CLOCK_GetPeripheralClockFrequency();
|
|
|
|
/* increase if too low */
|
|
|
|
while (canModuleFreqHz < 12000000)
|
|
|
|
{
|
|
|
|
canModuleFreqHz *= 2;
|
|
|
|
}
|
|
|
|
/* decrease if too high */
|
|
|
|
while (canModuleFreqHz > 120000000)
|
|
|
|
{
|
|
|
|
canModuleFreqHz /= 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* configure CAN module*/
|
|
|
|
XMC_CAN_Init(CAN, XMC_CAN_CANCLKSRC_FPERI, canModuleFreqHz);
|
|
|
|
|
|
|
|
/* configure CAN node baudrate */
|
|
|
|
baud.can_frequency = canModuleFreqHz;
|
|
|
|
baud.baudrate = BOOT_COM_CAN_BAUDRATE;
|
|
|
|
baud.sample_point = 8000;
|
|
|
|
baud.sjw = 1,
|
|
|
|
XMC_CAN_NODE_NominalBitTimeConfigure(CAN_NODE1, &baud);
|
|
|
|
|
|
|
|
/* set CCE and INIT bit NCR for node configuration */
|
|
|
|
XMC_CAN_NODE_EnableConfigurationChange(CAN_NODE1);
|
|
|
|
XMC_CAN_NODE_SetInitBit(CAN_NODE1);
|
|
|
|
|
|
|
|
/* configure the receive message object */
|
|
|
|
receiveMsgObj.can_mo_ptr = CAN_MO1;
|
|
|
|
receiveMsgObj.can_priority = XMC_CAN_ARBITRATION_MODE_IDE_DIR_BASED_PRIO_2;
|
|
|
|
receiveMsgObj.can_identifier = BOOT_COM_CAN_RX_MSG_ID;
|
|
|
|
receiveMsgObj.can_id_mask= BOOT_COM_CAN_RX_MSG_ID;
|
|
|
|
receiveMsgObj.can_id_mode = XMC_CAN_FRAME_TYPE_STANDARD_11BITS;
|
|
|
|
receiveMsgObj.can_ide_mask = 1;
|
|
|
|
receiveMsgObj.can_data_length = BOOT_COM_CAN_RX_MAX_DATA;
|
|
|
|
for (byteIdx=0; byteIdx<receiveMsgObj.can_data_length; byteIdx++)
|
|
|
|
{
|
|
|
|
receiveMsgObj.can_data_byte[byteIdx] = 0;
|
|
|
|
}
|
|
|
|
receiveMsgObj.can_mo_type = XMC_CAN_MO_TYPE_RECMSGOBJ;
|
|
|
|
XMC_CAN_MO_Config(&receiveMsgObj);
|
|
|
|
|
|
|
|
/* allocate receive message object to the channel */
|
|
|
|
XMC_CAN_AllocateMOtoNodeList(CAN, 1, 1);
|
|
|
|
|
|
|
|
/* reset CCE and INIT bit NCR for node configuration */
|
|
|
|
XMC_CAN_NODE_DisableConfigurationChange(CAN_NODE1);
|
|
|
|
XMC_CAN_NODE_ResetInitBit(CAN_NODE1);
|
|
|
|
|
|
|
|
/* configure CAN receive pin */
|
|
|
|
rx_can_config.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
|
|
|
|
XMC_GPIO_Init(P1_13, &rx_can_config);
|
|
|
|
/* configure CAN transmit pin */
|
|
|
|
tx_can_config.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT2;
|
|
|
|
tx_can_config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
|
|
|
|
tx_can_config.output_strength = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE;
|
|
|
|
XMC_GPIO_Init(P1_12, &tx_can_config);
|
|
|
|
/* select CAN Receive Input C (N1_RXDC) to map P1_13 to CAN_NODE1 */
|
|
|
|
XMC_CAN_NODE_EnableConfigurationChange(CAN_NODE1);
|
|
|
|
XMC_CAN_NODE_SetReceiveInput(CAN_NODE1, XMC_CAN_NODE_RECEIVE_INPUT_RXDCC);
|
|
|
|
XMC_CAN_NODE_DisableConfigurationChange(CAN_NODE1);
|
|
|
|
} /*** end of BootComCanInit ***/
|
|
|
|
|
|
|
|
|
|
|
|
/************************************************************************************//**
|
|
|
|
** \brief Receives the CONNECT request from the host, which indicates that the
|
|
|
|
** bootloader should be activated and, if so, activates it.
|
|
|
|
** \return none.
|
|
|
|
**
|
|
|
|
****************************************************************************************/
|
|
|
|
static void BootComCanCheckActivationRequest(void)
|
|
|
|
{
|
|
|
|
unsigned char byteIdx;
|
|
|
|
unsigned char rxMsgData[8];
|
|
|
|
unsigned char rxMsgReceived = 0;
|
|
|
|
|
|
|
|
/* check if a new message was received */
|
|
|
|
if ((XMC_CAN_MO_GetStatus(&receiveMsgObj) & XMC_CAN_MO_STATUS_RX_PENDING) != 0)
|
|
|
|
{
|
|
|
|
/* read out and process the newly received data */
|
|
|
|
if (XMC_CAN_MO_ReceiveData(&receiveMsgObj) == XMC_CAN_STATUS_SUCCESS)
|
|
|
|
{
|
|
|
|
for (byteIdx=0; byteIdx<receiveMsgObj.can_data_length; byteIdx++)
|
|
|
|
{
|
|
|
|
rxMsgData[byteIdx] = receiveMsgObj.can_data_byte[byteIdx];
|
|
|
|
/* set flag that message was received */
|
|
|
|
rxMsgReceived = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* reset the message received flag */
|
|
|
|
XMC_CAN_MO_ResetStatus(&receiveMsgObj, XMC_CAN_MO_RESET_STATUS_RX_PENDING);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* process received message */
|
|
|
|
if (rxMsgReceived == 1)
|
|
|
|
{
|
|
|
|
/* reset flag */
|
|
|
|
rxMsgReceived = 0;
|
|
|
|
/* check if this was an XCP CONNECT command */
|
|
|
|
if ((rxMsgData[0] == 0xff) && (rxMsgData[1] == 0x00))
|
|
|
|
{
|
|
|
|
/* connection request received so start the bootloader */
|
|
|
|
BootActivate();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} /*** end of BootComCanCheckActivationRequest ***/
|
|
|
|
#endif /* BOOT_COM_CAN_ENABLE > 0 */
|
|
|
|
|
|
|
|
|
2016-10-21 13:15:47 +00:00
|
|
|
/*********************************** end of boot.c *************************************/
|