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https://github.com/dougg3/mac-rom-simm-programmer.git
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78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
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/*
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* board_hw.h
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*
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* Created on: Jun 19, 2023
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* Author: Doug
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*
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* Copyright (C) 2011-2023 Doug Brown
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#ifndef HAL_M258KE_BOARD_HW_H_
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#define HAL_M258KE_BOARD_HW_H_
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#include "gpio_hw.h"
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#include "../gpio.h"
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#include "hardware.h"
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#include "../usbcdc.h"
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#define BOARD_LED_INVERTED true
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/** Gets the GPIO pin on the board that controls the status LED
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*
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* @return The status LED pin
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*/
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static inline GPIOPin Board_LEDPin(void)
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{
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return GPIO_PIN(GPIOB, 14);
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}
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/** Jumps to the bootloader
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*
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*/
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static inline void Board_EnterBootloader(void)
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{
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// Insert a small delay to ensure that it arrives before rebooting.
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DelayMS(1000);
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// Disable interrupts so nothing weird happens...
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DisableInterrupts();
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// Done with the USB interface -- the bootloader will re-initialize it.
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USBCDC_Disable();
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// Wait a little bit to let everything settle and let the program
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// close the port after the USB disconnect
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DelayMS(2000);
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// Clear reset status bits so that bootloader knows reset reason
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SYS->RSTSTS = (SYS_RSTSTS_PORF_Msk | SYS_RSTSTS_PINRF_Msk);
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// Boot to LDROM next time
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FMC->ISPCTL |= FMC_ISPCTL_BS_Msk;
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// Save a special flag in RAM to indicate we want to stay in the bootloader
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*(uint32_t *)(0x20003FFC) = 0xBADF00D5;
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// Reset!
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NVIC_SystemReset();
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// Should never get here, but just in case...
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while (1);
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}
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#endif /* HAL_M258KE_BOARD_HW_H_ */
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