Error: junk at end of line, first unrecognized character valued 0xffffffe2

[SHald.1]

I wrote the below assembly macro in startup.S file.

.macro DEBUG_ToggleLED88

  /*Enable clock to the Peripheral

   Set the pin to output

   Toggle PD14

   */

  .equ RCC_BASE, 0x58024400

  .equ GPIOD_BASE,0x58020C00

  .equ AHB4ENR_OFFSET,0x0E0‬

  .equ RCC_AHB4ENR, 0x580244E0

  .equ LED_D88_GPIO_Port,GPIOD_BASE

  .equ GPIODMODER_OFFSET,0x00

  .equ GPIODODR_OFFSET,0x14

  .equ GPIODBSRR_OFFSET, 0x18

  .equ RCC_AHB4ENR_GPIODEN_Msk,0x00000008

  .equ GPIO_MODER_MODE14_0,0x10000000

  .equ GPIO_BSRR_BS14_Msk,0x00004000

  .equ GPIO_BSRR_BR14_Msk,0x40000000

  .equ GPIOD_MODER,0x58020C00

  .equ GPIOD_ODR,0x58020C14

  .equ GPIOD_BSRR,0x58020C18

  /*RCC->AHB4ENR |= RCC_AHB4ENR_GPIODEN_Msk*/

  /*---------------------------------------*/

  /*Load address of RCC_AHB4ENR to R0*   */

  LDR        R0,=RCC_AHB4ENR

  /*LOAD the Value at address found in R0 into R1*/

  LDR        R1,[R0]

  /*Bitwise OR on the value in R1*/

  ORR        R1,#RCC_AHB4ENR_GPIODEN_Msk

  /*Store the content in R1 back at address found in R0*/

  STR        R1,[R0]

  /*GPIOD->MODER |=GPIO_MODER_MODE14_0*/

  /*--------------------------------------*/

  /*Load address of GPIOD_MODER to R0*/

  LDR        R0,=GPIOD_MODER

  /*LOAD the Value at address found in R0 into R1*/

  LDR        R1,[R0]

  /*Bitwise OR on the value in R1*/

  ORR        R1,#GPIO_MODER_MODE14_0

  /*Store the content in R1 back at address found in R0*/

  /*GPIOD->BSRR |=GPIO_BSRR_BS14_Msk*/

  /*-----------------------------------------*/

  /*Load address of GPIOD_ODR to R0*/

  LDR        R0,=GPIOD_BSRR

  /*LOAD the Value at address found in R0 into R1*/

  LDR        R1,[R0]

  /*Bitwise OR on the value in R1*/

  ORR        R1,#GPIO_BSRR_BS14_Msk

  /*Store the content in R1 back at address found in R0*/

  STR        R1,[R0]

  /*GPIOD->BSRR |=GPIO_BSRR_BR14_Msk*/

  LDR        R0,=GPIOD_BSRR

  /*LOAD the Value at address found in R0 into R1*/

  LDR        R1,[R0]

  /*Bitwise OR on the value in R1*/

  ORR        R1,#GPIO_BSRR_BR14_Msk

  /*Store the content in R1 back at address found in R0*/

  STR        R1,[R0]

.endm

But, the assembler throws the Error: junk at end of line, first unrecognized character valued 0xffffffe2

How to resolve it?

[Peter BENSCH · Accepted solution]

I can't explain the cause of these three ominous bytes that seem to keep slipping up. Please mark the entire macro, then delete it and reinsert it from the cleaned-up code below:

.macro DEBUG_ToggleLED88
 
   .equ RCC_BASE,0x58024400
   .equ LED_D88_GPIO_Port,0x58020C00
   .equ GPIOD_BASE,0x58020C00
   .equ GPIODODR_OFFSET,0x14
   .equ GPIODBSRR_OFFSET,0x18
   .equ RCC_AHBENR_GPIODEN_Msk,0x00000008
   .equ GPIO_MODER_MODE14_0,0x10000000
   .equ GPIO_BSRR_BS14_Msk,0x00004000
   .equ GPIO_BSRR_BR14_Msk,0x40000000
   .equ GPIOD_MODER,0x58020C00
   .equ GPIOD_ODR,0x58020C14
   .equ GPIOD_BSRR,0x58020C18
 
   LDR R0,=RCC_AHBENR
   LDR R1,[R0]
   ORR R1,#RCC_AHBENR_GPIODEN_Msk
   STR R1,[R0]
 
   LDR R0,=GPIOD_MODER
   LDR R1,[R0]
   ORR R1,#GPIO_MODER_MODE14_0
 
   LDR R0,=GPIOD_BSRR
   LDR R1,[R0]
   ORR R1,#GPIO_BSRR_BS14_Msk
   STR R1,[R0]
 
   LDR R0,=GPIOD_BSRR
   LDR R1,[R0]
   ORR R1,#GPIO_BSRR_BR14_Msk
   STR R1,[R0]
.endm

[SHald.1]

Hello Peter,

Thank You very much.

With the code snippet provided by you the issue got resolved.

Thank you again.

Best Regards,

Snehashis

[Peter BENSCH]

Great!

If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.

Regards

/Peter