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lcd_st7920: Make sure nsecs_to_ticks() is always inlined

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It is a compile-time calculation that needs to be inlined to work.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2025-04-17 12:06:13 -04:00
parent cb6828ec34
commit 56d3f4e64c
1 changed files with 6 additions and 6 deletions
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12
src/lcd_st7920.c
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@ -22,19 +22,19 @@ struct st7920 {
* Transmit functions * Transmit functions
****************************************************************/ ****************************************************************/
static uint32_t static __always_inline uint32_t
nsecs_to_ticks(uint32_t ns) nsecs_to_ticks(uint32_t ns)
{ {
return timer_from_us(ns * 1000) / 1000000; return timer_from_us(ns * 1000) / 1000000;
} }
static inline void static void
ndelay(uint32_t nsecs) ndelay(uint32_t ticks)
{ {
if (CONFIG_MACH_AVR) if (CONFIG_MACH_AVR)
// Slower MCUs don't require a delay // Slower MCUs don't require a delay
return; return;
uint32_t end = timer_read_time() + nsecs_to_ticks(nsecs); uint32_t end = timer_read_time() + ticks;
while (timer_is_before(timer_read_time(), end)) while (timer_is_before(timer_read_time(), end))
irq_poll(); irq_poll();
} }
@ -53,9 +53,9 @@ st7920_xmit_byte(struct st7920 *s, uint8_t data)
gpio_out_toggle(sid); gpio_out_toggle(sid);
data = ~data; data = ~data;
} }
ndelay(200); ndelay(nsecs_to_ticks(200));
gpio_out_toggle(sclk); gpio_out_toggle(sclk);
ndelay(200); ndelay(nsecs_to_ticks(200));
data <<= 1; data <<= 1;
gpio_out_toggle(sclk); gpio_out_toggle(sclk);
} }