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@ -129,14 +129,16 @@ GPIO_CNF |
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; Output pins C8, C9 |
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LDR R0, =GPIOC_MODER |
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LDR R1, [R0] |
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; Clear the area we'll write to |
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BIC R1,R1, #(GPIO_MODER_8 :OR: GPIO_MODER_9) |
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; Write "OUTPUT" pattern (0x5555...) masked to the two bits |
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ORR R1,R1, #(GPIO_MODER_8 :OR: GPIO_MODER_9) & GPIO_MODER_OUTPUT |
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STR R1, [R0] |
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; Input pin A0 |
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LDR R0, =GPIOA_MODER |
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LDR R1, [R0] |
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BIC R1,R1, #GPIO_MODER_0 ; Clear the bit config area |
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BIC R1,R1, #GPIO_MODER_0 |
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ORR R1,R1, #(GPIO_MODER_0 & GPIO_MODER_INPUT); Write the "input" pattern into the bit config area |
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STR R1, [R0] |
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