| // Copyright 2021 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #include <stdbool.h> |
| |
| #include "pw_boot/boot.h" |
| #include "pw_boot_cortex_m/boot.h" |
| #include "pw_preprocessor/compiler.h" |
| #include "stm32f4xx.h" |
| |
| // Default handler to insert into the ARMv7-M vector table (below). |
| // This function exists for convenience. If a device isn't doing what you |
| // expect, it might have hit a fault and ended up here. |
| static void DefaultFaultHandler(void) { |
| while (true) { |
| // Wait for debugger to attach. |
| } |
| } |
| |
| // This is the device's interrupt vector table. It's not referenced in any |
| // code because the platform (STM32F4xx) expects this table to be present at the |
| // beginning of flash. The exact address is specified in the pw_boot_armv7m |
| // configuration as part of the target config. |
| // |
| // For more information, see ARMv7-M Architecture Reference Manual DDI 0403E.b |
| // section B1.5.3. |
| |
| // This typedef is for convenience when building the vector table. With the |
| // exception of SP_main (0th entry in the vector table), all the entries of the |
| // vector table are function pointers. |
| typedef void (*InterruptHandler)(void); |
| |
| // This is the timer interrupt handler implemented by the stm32cubef4 timer |
| // template. |
| void TIM6_DAC_IRQHandler(void); |
| |
| // Interrupt handlers critical for OS operation. |
| void SVC_Handler(void); |
| void PendSV_Handler(void); |
| void SysTick_Handler(void); |
| |
| PW_KEEP_IN_SECTION(".vector_table") |
| const InterruptHandler vector_table[] = { |
| // The starting location of the stack pointer. |
| // This address is NOT an interrupt handler/function pointer, it is simply |
| // the address that the main stack pointer should be initialized to. The |
| // value is reinterpret casted because it needs to be in the vector table. |
| [0] = (InterruptHandler)(&pw_boot_stack_high_addr), |
| |
| // Reset handler, dictates how to handle reset interrupt. This is the |
| // address that the Program Counter (PC) is initialized to at boot. |
| [1] = pw_boot_Entry, |
| |
| // NMI handler. |
| [2] = DefaultFaultHandler, |
| // HardFault handler. |
| [3] = DefaultFaultHandler, |
| // 4-6: Specialized fault handlers. |
| // 7-10: Reserved. |
| // SVCall handler. |
| [11] = SVC_Handler, |
| // DebugMon handler. |
| [12] = DefaultFaultHandler, |
| // 13: Reserved. |
| // PendSV handler. |
| [14] = PendSV_Handler, |
| // SysTick handler. |
| [15] = SysTick_Handler, |
| // stm32f4xx_hal sys-tick handler. |
| [TIM6_DAC_IRQn + 16] = TIM6_DAC_IRQHandler, |
| }; |