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Coding style fix for SYST registers.

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This commit is contained in:
NIIBE Yutaka
2019-04-11 09:08:33 +09:00
parent 681a0055e4
commit f8880aafec
1 changed files with 16 additions and 12 deletions
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28
chopstx-cortex-m.c
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@@ -1,8 +1,8 @@
/*
* chopstx-cortex-m.c - Threads and only threads: Arch specific code
* for Cortex-M0/M3
* for Cortex-M0/M3/M4
*
* Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018
* Copyright (C) 2013, 2014, 2015, 2016, 2017, 2018, 2019
* Flying Stone Technology
* Author: NIIBE Yutaka <gniibe@fsij.org>
*
@@ -106,30 +106,34 @@ struct chx_stack_regs {
* System tick
*/
/* SysTick registers. */
static volatile uint32_t *const SYST_CSR = (uint32_t *)0xE000E010;
static volatile uint32_t *const SYST_RVR = (uint32_t *)0xE000E014;
static volatile uint32_t *const SYST_CVR = (uint32_t *)0xE000E018;
struct SYST {
volatile uint32_t CSR;
volatile uint32_t RVR;
volatile uint32_t CVR;
const uint32_t CALIB;
};
static struct SYST *const SYST = (struct SYST *)0xE000E010;
static void
chx_systick_reset (void)
{
*SYST_RVR = 0;
*SYST_CVR = 0;
*SYST_CSR = 7;
SYST->RVR = 0;
SYST->CVR = 0;
SYST->CSR = 7;
}
static void
chx_systick_reload (uint32_t ticks)
{
*SYST_RVR = ticks;
*SYST_CVR = 0; /* write (any) to clear the counter to reload. */
*SYST_RVR = 0;
SYST->RVR = ticks;
SYST->CVR = 0; /* write (any) to clear the counter to reload. */
SYST->RVR = 0;
}
static uint32_t
chx_systick_get (void)
{
return *SYST_CVR;
return SYST->CVR;
}
static uint32_t usec_to_ticks (uint32_t usec)