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Slow down the GPIO writes a bit. #545

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merged 3 commits into from
Jul 4, 2021
Merged

Slow down the GPIO writes a bit. #545

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d0c51ce
Slow down the GPIO writes a bit.
balazsracz Jun 22, 2021
9846bef
Switch from NOP to barrier instruction.
balazsracz Jul 3, 2021
b6019ad
Added documentation comments.
balazsracz Jul 4, 2021
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1 change: 1 addition & 0 deletions src/freertos_drivers/ti/CC3200GPIO.hxx
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,7 @@ public:
volatile uint8_t *ptr = reinterpret_cast<uint8_t *>(
GPIO_BASE + (((unsigned)GPIO_PIN) << 2));
*ptr = value ? 0xff : 0;
__asm__ volatile("\t nop\n");
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Can you add a comment as to why this nop is required?

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done

}
/// @return current value of the input pin: if true HIGH.
static bool __attribute__((always_inline)) get()
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