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81 lines
1.6 KiB
81 lines
1.6 KiB
9 years ago
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;***************************************************************************************************
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;*
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;* F303RE Nucleo "blinky" example
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;*
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;* (c) Ondrej Hruska, 2016
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;*
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;***************************************************************************************************
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AREA MAIN, CODE, READONLY
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; this is required by the startup script (?)
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__use_two_region_memory
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EXPORT __use_two_region_memory
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;;;--- Include library files -----------------------
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;;
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GET sfr_f303xE.asm
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GET Cfg_RCC.asm
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GET Cfg_GPIO.asm
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GET ../Delay.asm
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;;
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;;;-------------------------------------------------
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;;;-------------------------------------------------
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;; System config.
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;;
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;; Called by startup script before __main
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;;
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SystemInit PROC
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EXPORT SystemInit ; Export to startup script
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PUSH {LR}
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BL Cfg_RCC
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BL Cfg_GPIO
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POP {PC}
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ENDP
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;;
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;;;-------------------------------------------------
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;;;-------------------------------------------------
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;; Main function
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;;
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;; Called by startup script after SystemInit.
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;; __main is called only once, and does not return!
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;;
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ALIGN
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__main PROC
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EXPORT __main ; Export to startup script
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MAIN_LOOP ; Main loop
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LDR R0, =100
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BL Delay
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; Toggle LED at PA5
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LDR R2, =GPIOA_ODR
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LDR R1, [R2]
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EOR R1, #GPIO_ODR_ODR5
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STR R1, [R2]
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B MAIN_LOOP ; Jump to start of the main loop
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ENDP
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;;
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;;;-------------------------------------------------
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;; end of file, aligned to 4 bytes
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ALIGN
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END
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