Mercurial > public > ostc4
view Small_CPU/Src/startup_stm32f4xx.S @ 923:6fc0e3d230e4 Evo_2_23 tip
UART6 DMA handling:
Make sure that RX transmission uses DMA stream 2
| author | Ideenmodellierer |
|---|---|
| date | Mon, 04 Nov 2024 20:21:02 +0100 |
| parents | 22864a24973b |
| children |
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/* File: startup_ARMCM4.S * Purpose: startup file for Cortex-M4 devices. Should use with * GCC for ARM Embedded Processors * Version: V1.3 * Date: 08 Feb 2012 * * Copyright (c) 2012, ARM Limited * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the ARM Limited nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ .syntax unified .arch armv7-m .section .stack .align 3 #ifdef __STACK_SIZE .equ Stack_Size, __STACK_SIZE #else .equ Stack_Size, 0x400 #endif .globl __StackTop .globl __StackLimit __StackLimit: .space Stack_Size .size __StackLimit, . - __StackLimit __StackTop: .size __StackTop, . - __StackTop .section .heap .align 3 #ifdef __HEAP_SIZE .equ Heap_Size, __HEAP_SIZE #else .equ Heap_Size, 0xC00 #endif .globl __HeapBase .globl __HeapLimit __HeapBase: .if Heap_Size .space Heap_Size .endif .size __HeapBase, . - __HeapBase __HeapLimit: .size __HeapLimit, . - __HeapLimit .section .isr_vector .align 2 .globl __isr_vector __isr_vector: .long __StackTop /* Top of Stack */ .long Reset_Handler /* Reset Handler */ .long NMI_Handler /* NMI Handler */ .long HardFault_Handler /* Hard Fault Handler */ .long MemManage_Handler /* MPU Fault Handler */ .long BusFault_Handler /* Bus Fault Handler */ .long UsageFault_Handler /* Usage Fault Handler */ .long 0 /* Reserved */ .long 0 /* Reserved */ .long 0 /* Reserved */ .long 0 /* Reserved */ .long SVC_Handler /* SVCall Handler */ .long DebugMon_Handler /* Debug Monitor Handler */ .long 0 /* Reserved */ .long PendSV_Handler /* PendSV Handler */ .long SysTick_Handler /* SysTick Handler */ // External Interrupts .long WWDG_IRQHandler // Window WatchDog .long PVD_IRQHandler // PVD through EXTI Line detection .long TAMP_STAMP_IRQHandler // Tamper and TimeStamps through the EXTI line .long RTC_WKUP_IRQHandler // RTC Wakeup through the EXTI line .long FLASH_IRQHandler // FLASH .long RCC_IRQHandler // RCC .long EXTI0_IRQHandler // EXTI Line0 .long EXTI1_IRQHandler // EXTI Line1 .long EXTI2_IRQHandler // EXTI Line2 .long EXTI3_IRQHandler // EXTI Line3 .long EXTI4_IRQHandler // EXTI Line4 .long DMA1_Stream0_IRQHandler // DMA1 Stream 0 .long DMA1_Stream1_IRQHandler // DMA1 Stream 1 .long DMA1_Stream2_IRQHandler // DMA1 Stream 2 .long DMA1_Stream3_IRQHandler // DMA1 Stream 3 .long DMA1_Stream4_IRQHandler // DMA1 Stream 4 .long DMA1_Stream5_IRQHandler // DMA1 Stream 5 .long DMA1_Stream6_IRQHandler // DMA1 Stream 6 .long ADC_IRQHandler // ADC1, ADC2 and ADC3s .long CAN1_TX_IRQHandler // CAN1 TX .long CAN1_RX0_IRQHandler // CAN1 RX0 .long CAN1_RX1_IRQHandler // CAN1 RX1 .long CAN1_SCE_IRQHandler // CAN1 SCE .long EXTI9_5_IRQHandler // External Line[9:5]s .long TIM1_BRK_TIM9_IRQHandler // TIM1 Break and TIM9 .long TIM1_UP_TIM10_IRQHandler // TIM1 Update and TIM10 .long TIM1_TRG_COM_TIM11_IRQHandler // TIM1 Trigger and Commutation and TIM11 .long TIM1_CC_IRQHandler // TIM1 Capture Compare .long TIM2_IRQHandler // TIM2 .long TIM3_IRQHandler // TIM3 .long TIM4_IRQHandler // TIM4 .long I2C1_EV_IRQHandler // I2C1 Event .long I2C1_ER_IRQHandler // I2C1 Error .long I2C2_EV_IRQHandler // I2C2 Event .long I2C2_ER_IRQHandler // I2C2 Error .long SPI1_IRQHandler // SPI1 .long SPI2_IRQHandler // SPI2 .long USART1_IRQHandler // USART1 .long USART2_IRQHandler // USART2 .long USART3_IRQHandler // USART3 .long EXTI15_10_IRQHandler // External Line[15:10]s .long RTC_Alarm_IRQHandler // RTC Alarm (A and B) through EXTI Line .long OTG_FS_WKUP_IRQHandler // USB OTG FS Wakeup through EXTI line .long TIM8_BRK_TIM12_IRQHandler // TIM8 Break and TIM12 .long TIM8_UP_TIM13_IRQHandler // TIM8 Update and TIM13 .long TIM8_TRG_COM_TIM14_IRQHandler // TIM8 Trigger and Commutation and TIM14 .long TIM8_CC_IRQHandler // TIM8 Capture Compare .long DMA1_Stream7_IRQHandler // DMA1 Stream7 .long FSMC_IRQHandler // FSMC .long SDIO_IRQHandler // SDIO .long TIM5_IRQHandler // TIM5 .long SPI3_IRQHandler // SPI3 .long UART4_IRQHandler // UART4 .long UART5_IRQHandler // UART5 .long TIM6_DAC_IRQHandler // TIM6 and DAC1&2 underrun errors .long TIM7_IRQHandler // TIM7 .long DMA2_Stream0_IRQHandler // DMA2 Stream 0 .long DMA2_Stream1_IRQHandler // DMA2 Stream 1 .long DMA2_Stream2_IRQHandler // DMA2 Stream 2 .long DMA2_Stream3_IRQHandler // DMA2 Stream 3 .long DMA2_Stream4_IRQHandler // DMA2 Stream 4 .long ETH_IRQHandler // Ethernet .long ETH_WKUP_IRQHandler // Ethernet Wakeup through EXTI line .long CAN2_TX_IRQHandler // CAN2 TX .long CAN2_RX0_IRQHandler // CAN2 RX0 .long CAN2_RX1_IRQHandler // CAN2 RX1 .long CAN2_SCE_IRQHandler // CAN2 SCE .long OTG_FS_IRQHandler // USB OTG FS .long DMA2_Stream5_IRQHandler // DMA2 Stream 5 .long DMA2_Stream6_IRQHandler // DMA2 Stream 6 .long DMA2_Stream7_IRQHandler // DMA2 Stream 7 .long USART6_IRQHandler // USART6 .long I2C3_EV_IRQHandler // I2C3 event .long I2C3_ER_IRQHandler // I2C3 error .long OTG_HS_EP1_OUT_IRQHandler // USB OTG HS End Point 1 Out .long OTG_HS_EP1_IN_IRQHandler // USB OTG HS End Point 1 In .long OTG_HS_WKUP_IRQHandler // USB OTG HS Wakeup through EXTI .long OTG_HS_IRQHandler // USB OTG HS .long DCMI_IRQHandler // DCMI .long CRYP_IRQHandler // CRYP crypto .long HASH_RNG_IRQHandler // Hash and Rng .long FPU_IRQHandler // FPU .size __isr_vector, . - __isr_vector .text .thumb .thumb_func .align 2 .globl Reset_Handler .type Reset_Handler, %function Reset_Handler: /* Loop to copy data from read only memory to RAM. The ranges * of copy from/to are specified by following symbols evaluated in * linker script. * __etext: End of code section, i.e., begin of data sections to copy from. * __data_start__/__data_end__: RAM address range that data should be * copied to. Both must be aligned to 4 bytes boundary. */ ldr r1, =_sidata /*__etext*/ ldr r2, =__data_start__ ldr r3, =__data_end__ #if 1 /* Here are two copies of loop implemenations. First one favors code size * and the second one favors performance. Default uses the first one. * Change to "#if 0" to use the second one */ .flash_to_ram_loop: cmp r2, r3 ittt lt ldrlt r0, [r1], #4 strlt r0, [r2], #4 blt .flash_to_ram_loop #else subs r3, r2 ble .flash_to_ram_loop_end .flash_to_ram_loop: subs r3, #4 ldr r0, [r1, r3] str r0, [r2, r3] bgt .flash_to_ram_loop .flash_to_ram_loop_end: #endif #ifndef __NO_SYSTEM_INIT ldr r0, =SystemInit blx r0 #endif ldr r0, =_start bx r0 .pool .size Reset_Handler, . - Reset_Handler /* Our weak _start alternative if we don't use the library _start * The zero init section must be cleared, otherwise the librtary is * doing that */ .align 1 .thumb_func .weak _start .type _start, %function _start: /* Zero fill the bss segment. */ ldr r1, = __bss_start__ ldr r2, = __bss_end__ movs r3, #0 b .fill_zero_bss .loop_zero_bss: str r3, [r1], #4 .fill_zero_bss: cmp r1, r2 bcc .loop_zero_bss /* Jump to our main */ bl main b . .size _start, . - _start /* Macro to define default handlers. Default handler * will be weak symbol and just dead loops. They can be * overwritten by other handlers */ .macro def_irq_handler handler_name .align 1 .thumb_func .weak \handler_name .type \handler_name, %function \handler_name : b . .size \handler_name, . - \handler_name .endm def_irq_handler NMI_Handler def_irq_handler HardFault_Handler def_irq_handler MemManage_Handler def_irq_handler BusFault_Handler def_irq_handler UsageFault_Handler def_irq_handler SVC_Handler def_irq_handler DebugMon_Handler def_irq_handler PendSV_Handler def_irq_handler SysTick_Handler def_irq_handler Default_Handler // External Interrupts def_irq_handler WWDG_IRQHandler // Window WatchDog def_irq_handler PVD_IRQHandler // PVD through EXTI Line detection def_irq_handler TAMP_STAMP_IRQHandler // Tamper and TimeStamps through the EXTI line def_irq_handler RTC_WKUP_IRQHandler // RTC Wakeup through the EXTI line def_irq_handler FLASH_IRQHandler // FLASH def_irq_handler RCC_IRQHandler // RCC def_irq_handler EXTI0_IRQHandler // EXTI Line0 def_irq_handler EXTI1_IRQHandler // EXTI Line1 def_irq_handler EXTI2_IRQHandler // EXTI Line2 def_irq_handler EXTI3_IRQHandler // EXTI Line3 def_irq_handler EXTI4_IRQHandler // EXTI Line4 def_irq_handler DMA1_Stream0_IRQHandler // DMA1 Stream 0 def_irq_handler DMA1_Stream1_IRQHandler // DMA1 Stream 1 def_irq_handler DMA1_Stream2_IRQHandler // DMA1 Stream 2 def_irq_handler DMA1_Stream3_IRQHandler // DMA1 Stream 3 def_irq_handler DMA1_Stream4_IRQHandler // DMA1 Stream 4 def_irq_handler DMA1_Stream5_IRQHandler // DMA1 Stream 5 def_irq_handler DMA1_Stream6_IRQHandler // DMA1 Stream 6 def_irq_handler ADC_IRQHandler // ADC1, ADC2 and ADC3s def_irq_handler CAN1_TX_IRQHandler // CAN1 TX def_irq_handler CAN1_RX0_IRQHandler // CAN1 RX0 def_irq_handler CAN1_RX1_IRQHandler // CAN1 RX1 def_irq_handler CAN1_SCE_IRQHandler // CAN1 SCE def_irq_handler EXTI9_5_IRQHandler // External Line[9:5]s def_irq_handler TIM1_BRK_TIM9_IRQHandler // TIM1 Break and TIM9 def_irq_handler TIM1_UP_TIM10_IRQHandler // TIM1 Update and TIM10 def_irq_handler TIM1_TRG_COM_TIM11_IRQHandler // TIM1 Trigger and Commutation and TIM11 def_irq_handler TIM1_CC_IRQHandler // TIM1 Capture Compare def_irq_handler TIM2_IRQHandler // TIM2 def_irq_handler TIM3_IRQHandler // TIM3 def_irq_handler TIM4_IRQHandler // TIM4 def_irq_handler I2C1_EV_IRQHandler // I2C1 Event def_irq_handler I2C1_ER_IRQHandler // I2C1 Error def_irq_handler I2C2_EV_IRQHandler // I2C2 Event def_irq_handler I2C2_ER_IRQHandler // I2C2 Error def_irq_handler SPI1_IRQHandler // SPI1 def_irq_handler SPI2_IRQHandler // SPI2 def_irq_handler USART1_IRQHandler // USART1 def_irq_handler USART2_IRQHandler // USART2 def_irq_handler USART3_IRQHandler // USART3 def_irq_handler EXTI15_10_IRQHandler // External Line[15:10]s def_irq_handler RTC_Alarm_IRQHandler // RTC Alarm (A and B) through EXTI Line def_irq_handler OTG_FS_WKUP_IRQHandler // USB OTG FS Wakeup through EXTI line def_irq_handler TIM8_BRK_TIM12_IRQHandler // TIM8 Break and TIM12 def_irq_handler TIM8_UP_TIM13_IRQHandler // TIM8 Update and TIM13 def_irq_handler TIM8_TRG_COM_TIM14_IRQHandler // TIM8 Trigger and Commutation and TIM14 def_irq_handler TIM8_CC_IRQHandler // TIM8 Capture Compare def_irq_handler DMA1_Stream7_IRQHandler // DMA1 Stream7 def_irq_handler FSMC_IRQHandler // FSMC def_irq_handler SDIO_IRQHandler // SDIO def_irq_handler TIM5_IRQHandler // TIM5 def_irq_handler SPI3_IRQHandler // SPI3 def_irq_handler UART4_IRQHandler // UART4 def_irq_handler UART5_IRQHandler // UART5 def_irq_handler TIM6_DAC_IRQHandler // TIM6 and DAC1&2 underrun errors def_irq_handler TIM7_IRQHandler // TIM7 def_irq_handler DMA2_Stream0_IRQHandler // DMA2 Stream 0 def_irq_handler DMA2_Stream1_IRQHandler // DMA2 Stream 1 def_irq_handler DMA2_Stream2_IRQHandler // DMA2 Stream 2 def_irq_handler DMA2_Stream3_IRQHandler // DMA2 Stream 3 def_irq_handler DMA2_Stream4_IRQHandler // DMA2 Stream 4 def_irq_handler ETH_IRQHandler // Ethernet def_irq_handler ETH_WKUP_IRQHandler // Ethernet Wakeup through EXTI line def_irq_handler CAN2_TX_IRQHandler // CAN2 TX def_irq_handler CAN2_RX0_IRQHandler // CAN2 RX0 def_irq_handler CAN2_RX1_IRQHandler // CAN2 RX1 def_irq_handler CAN2_SCE_IRQHandler // CAN2 SCE def_irq_handler OTG_FS_IRQHandler // USB OTG FS def_irq_handler DMA2_Stream5_IRQHandler // DMA2 Stream 5 def_irq_handler DMA2_Stream6_IRQHandler // DMA2 Stream 6 def_irq_handler DMA2_Stream7_IRQHandler // DMA2 Stream 7 def_irq_handler USART6_IRQHandler // USART6 def_irq_handler I2C3_EV_IRQHandler // I2C3 event def_irq_handler I2C3_ER_IRQHandler // I2C3 error def_irq_handler OTG_HS_EP1_OUT_IRQHandler // USB OTG HS End Point 1 Out def_irq_handler OTG_HS_EP1_IN_IRQHandler // USB OTG HS End Point 1 In def_irq_handler OTG_HS_WKUP_IRQHandler // USB OTG HS Wakeup through EXTI def_irq_handler OTG_HS_IRQHandler // USB OTG HS def_irq_handler DCMI_IRQHandler // DCMI def_irq_handler CRYP_IRQHandler // CRYP crypto def_irq_handler HASH_RNG_IRQHandler // Hash and Rng def_irq_handler FPU_IRQHandler // FPU .end