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Update systick reload value

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The systick timer is driven by the AHB bus divided by 4, set the correct
reload value to generate a timer irq every ms.
This commit is contained in:
Stefan Kerkmann 2021-08-09 21:36:50 +02:00
parent 27f147f421
commit 1b6540a61c
1 changed files with 3 additions and 1 deletions
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4
hw/bsp/gd32vf103_longan_nano/gd32vf103_longan_nano.c
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@ -39,7 +39,9 @@ void USBFS_IRQHandler(void) { tud_int_handler(0); }
#define USB_NO_VBUS_PIN
#define TIMER_TICKS (SystemCoreClock / 1000)
// According to GD32VF103 user manual clock tree:
// Systick clock = AHB clock / 4.
#define TIMER_TICKS ((SystemCoreClock / 4) / 1000)
#define BUTTON_PORT GPIOA
#define BUTTON_PIN GPIO_PIN_0