是的,你可以用STM32CubeIDE编写汇编代码并编译成功。然而,很少有人这样做,因为与 C 编程相比,编写程序所需的工作要复杂得多,最重要的是,它非常耗时。
原则上,您可以将汇编程序插入到任何 CubeIDE 项目中,无论是现有项目还是新项目。但是,应该注意 GNU 汇编器的语法在某些方面可能与其他汇编器的不同。
基本上,您可以通过在 STM32CubeIDE 中创建来添加汇编代码:
- /*
- * assembler.h
- *
- */
-
- #ifndef APPLICATION_USER_CORE_ASSEMBLER_H_
- #define APPLICATION_USER_CORE_ASSEMBLER_H_
-
- extern void ASM_SystemInit(void);
- extern void ASM_Function(void);
-
- #endif /* APPLICATION_USER_CORE_ASSEMBLER_H_ */
- /* USER CODE BEGIN Includes */
- #include "assembler.h"
- /* USER CODE END Includes */
assembler.s 的内容可能如下所示(这个小示例还包含一个初始化,因为它是一个纯 ASM 项目):
- /*
- * assembler.s
- *
- */
-
- .syntax unified
-
- .text
- .global ASM_SystemInit
- .global ASM_Function
- .thumb_func
-
- .equ RCC_BASE_ADDR, 0x40021000
- .equ o_RCC_CR, 0x00 // offset to RCC_CR
- .equ o_RCC_CFGR, 0x08 // offset to RCC_CFGR
- .equ o_RCC_PLLCFGR, 0x0C // offset to RCC_PLLCFGR
- .equ o_RCC_AHB2ENR, 0x4C // offset to RCC_AHB2ENR
-
- .equ GPIOA_BASE_ADDR,0x48000000
- .equ o_GPIOA_MODER, 0x00 // offset to GPIOA_MODER
- .equ o_GPIOA_OTYPER, 0x04 // offset for GPIOA Output PP/OD
- .equ o_GPIOA_OSPEEDR,0x08 // offset for GPIOA Output Speed
- .equ o_GPIOA_PUPDR, 0x0C // offset for GPIOA PU/PD
-
- .equ GPIOA_BSRR, 0x48000018 // GPIOA Bit set reset register
-
- .equ COUNTER, 10000
- //------------------------------------------------------------------------------------------------
- ASM_SystemInit:
-
- // Clock configuration, 16 MHz HSI as PLL clock source
- LDR R1, =RCC_BASE_ADDR // Load RCC configuration register address in R1
-
- LDR R0, =0x06000802 // PLLPDIV=0, PLLR=8, PLLQ=2, PLLP=7, PLLN=16, PLLM=1, HSI16->PLL
- STR R0, [R1, o_RCC_PLLCFGR] // store into RCC_PLLCFGR
-
- ORR R0, #0x01000000 // set PLLREN (bit 24)
- STR R0, [R1, o_RCC_PLLCFGR] // store into RCC_PLLCFGR
-
- LDR R0, [R1, o_RCC_CR] // read RCC_CR
- ORR R0, #0x01000000 // set PLLON (bit 24)
- STR R0, [R1, o_RCC_CR] // store into RCC_CR
-
- ASM_SystemInit_1:
- LDR R0, [R1, o_RCC_CR] // read RCC_CR
- LSLS R0, #6 // Logical Shift Left by 6
- BPL.N ASM_SystemInit_1 // Branch if N flag = 0 (= positive or zero, see PM0214, table 24)
-
- [...]
-
- BX LR // Return from function
-
- //------------------------------------------------------------------------------------------------
- ASM_Function:
-
- turnON:
- // Set output high
- LDR R1, =GPIOA_BSRR
- LDR R0, =0x00000020
- STR R0, [R1]
-
- LDR R2, =COUNTER
- delay1:
- SUBS R2, R2, #1 // R2 = R2 - 1, R2 = 0?
- BNE delay1 // stay in loop delay1 if not equal to zero
-
- turnOFF:
- // Set output low
- LDR R0, =0x00200000
- STR R0, [R1]
-
- LDR R2, =#COUNTER
- LSL R2, #6 // Logical Shift Left
-
- delay2:
- SUBS R2, R2, #1 // R2 = R2 - 1, R2 = 0?
- BNE delay2 // stay in loop delay1 if not equal to zero
-
- delayDone:
- B turnON // Jump to turnON
- 最后使用以下语句在 main.c 中启动此汇编程序例程,而第一个是在第二个未退出时返回的函数(无限循环):
- int main(void)
- {
- /* USER CODE BEGIN 1 */
- ASM_SystemInit();
- ASM_Function();
- /* USER CODE END 1 */
- }
|
|
2022-12-8 15:49:08
评论
举报
|
|
|