171 lines
7.7 KiB
C
171 lines
7.7 KiB
C
/************************************************************************************//**
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* \file Demo/ARMCM4_XMC4_XMC4700_Relax_Kit_IAR/Boot/main.c
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* \brief Bootloader application source file.
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* \ingroup Boot_ARMCM4_XMC4_XMC4700_Relax_Kit_IAR
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* \internal
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*----------------------------------------------------------------------------------------
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* C O P Y R I G H T
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*----------------------------------------------------------------------------------------
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* Copyright (c) 2017 by Feaser http://www.feaser.com All rights reserved
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*
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*----------------------------------------------------------------------------------------
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* L I C E N S E
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*----------------------------------------------------------------------------------------
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* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You have received a copy of the GNU General Public License along with OpenBLT. It
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* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
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*
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* \endinternal
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****************************************************************************************/
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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "boot.h" /* bootloader generic header */
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#include "xmc_gpio.h" /* GPIO module */
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#include "xmc_uart.h" /* UART driver header */
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#include "xmc_can.h" /* CAN driver header */
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#include "shared_params.h" /* Shared parameters header */
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/****************************************************************************************
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* Function prototypes
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****************************************************************************************/
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static void Init(void);
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static void PostInit(void);
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/************************************************************************************//**
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** \brief This is the entry point for the bootloader application and is called
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** by the reset interrupt vector after the C-startup routines executed.
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** \return None.
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**
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****************************************************************************************/
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void main(void)
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{
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blt_int8u deferredInitRequestFlag = 0;
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/* initialize the microcontroller */
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Init();
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/* initialize the shared parameters module */
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SharedParamsInit();
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/* initialize the bootloader */
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BootInit();
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#if (BOOT_COM_DEFERRED_INIT_ENABLE == 1)
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/* the bootloader is configured to NOT initialize the TCP/IP network stack by default
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* to bypass unnecessary delay times before starting the user program. the TCP/IP net-
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* work tack is now only initialized when: (a) no valid user program is detected, or
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* (b) a forced backdoor entry occurred (CpuUserProgramStartHook() returned BLT_FALSE).
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*
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* these demo bootloader and user programs have one extra feature implemented for
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* demonstration purposes. the demo user program can detect firmware update requests
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* from the TCP/IP network in which case it activates the bootloader. But...the
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* TCP/IP network stack will not be initialized in this situation. for this reason
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* the shared parameter module was integrated in both the bootloader and user program.
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* more information about the shared parameter module can be found here:
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* https://www.feaser.com/en/blog/?p=216
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*
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* the shared parameter at the first index (0) contains a flag. this flag is set to
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* 1, right before the user program activates this bootloader, to explicitly request
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* the bootloader to initialize the TCP/IP network stack. this makes it possible for
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* a firmware update to proceed. the code here reads out this flag and performs the
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* TCP/IP network stack initialization when requested.
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*/
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SharedParamsReadByIndex(0, &deferredInitRequestFlag);
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if (deferredInitRequestFlag == 1)
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{
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/* explicitly initialize all communication interface for which the deferred
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* initialization feature was enabled.
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*/
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ComDeferredInit();
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}
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#endif
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/* post initialization of the microcontroller */
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PostInit();
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/* start the infinite program loop */
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while (1)
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{
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/* run the bootloader task */
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BootTask();
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}
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} /*** end of main ***/
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/************************************************************************************//**
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** \brief Initializes the microcontroller.
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** \return none.
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**
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****************************************************************************************/
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static void Init(void)
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{
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/* initialize LED1 on P5.9 as digital output */
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XMC_GPIO_SetMode(P5_9, XMC_GPIO_MODE_OUTPUT_PUSH_PULL);
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/* initialize BUTTON1 as digital input. */
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XMC_GPIO_SetMode(P15_13, XMC_GPIO_MODE_INPUT_TRISTATE);
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XMC_GPIO_EnableDigitalInput(P15_13);
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} /*** end of Init ***/
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/************************************************************************************//**
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** \brief Post initialization of the microcontroller. Contains all initialization
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** code that should run after the bootloader's core was initialized.
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** \return none.
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**
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****************************************************************************************/
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static void PostInit(void)
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{
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#if (BOOT_COM_UART_ENABLE > 0)
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XMC_GPIO_CONFIG_t rx_uart_config;
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XMC_GPIO_CONFIG_t tx_uart_config;
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#endif
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#if (BOOT_COM_CAN_ENABLE > 0)
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XMC_GPIO_CONFIG_t rx_can_config;
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XMC_GPIO_CONFIG_t tx_can_config;
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#endif
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#if (BOOT_COM_UART_ENABLE > 0)
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/* initialize UART Rx pin */
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rx_uart_config.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
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rx_uart_config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
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rx_uart_config.output_strength = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE;
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XMC_GPIO_Init(P1_4, &rx_uart_config);
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/* initialize UART Tx pin */
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tx_uart_config.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT2;
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tx_uart_config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
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tx_uart_config.output_strength = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE;
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XMC_GPIO_Init(P1_5, &tx_uart_config);
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/* set input source path to DXnB to connect P1_4 to ASC Receive. note that this
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* function must be called after XMC_UART_CH_Init(), which is called when initializing
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* the bootloader core with BootInit().
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*/
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XMC_USIC_CH_SetInputSource(XMC_UART0_CH0, XMC_USIC_CH_INPUT_DX0, 1U);
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#endif
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#if (BOOT_COM_CAN_ENABLE > 0)
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/* configure CAN receive pin */
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rx_can_config.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
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XMC_GPIO_Init(P1_13, &rx_can_config);
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/* configure CAN transmit pin */
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tx_can_config.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT2;
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tx_can_config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
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tx_can_config.output_strength = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE;
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XMC_GPIO_Init(P1_12, &tx_can_config);
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/* select CAN Receive Input C (N1_RXDC) to map P1_13 to CAN_NODE1 */
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XMC_CAN_NODE_EnableConfigurationChange(CAN_NODE1);
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XMC_CAN_NODE_SetReceiveInput(CAN_NODE1, XMC_CAN_NODE_RECEIVE_INPUT_RXDCC);
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XMC_CAN_NODE_DisableConfigurationChange(CAN_NODE1);
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#endif
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} /*** end of PostInit ***/
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/*********************************** end of main.c *************************************/
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