/**************************************************************************//** * * @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved. * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2020-12-3 Wayne First version * ******************************************************************************/ #include #if defined(BSP_USING_TIMER) && defined(RT_USING_HWTIMER) #include #include "NuMicro.h" #include #include "nu_timer.h" /* Private define ---------------------------------------------------------------*/ #define NU_TIMER_DEVICE(timer) (nu_timer_t)(timer) enum { TIMER_START = -1, #if defined(BSP_USING_TIMER0) TIMER0_IDX, #endif #if defined(BSP_USING_TIMER1) TIMER1_IDX, #endif #if defined(BSP_USING_TIMER2) TIMER2_IDX, #endif #if defined(BSP_USING_TIMER3) TIMER3_IDX, #endif /* BSP_USING_TIMER4 is reserved for Systick usage. */ TIMER_CNT }; /* Private typedef --------------------------------------------------------------*/ struct nu_timer { rt_hwtimer_t parent; char *name; uint32_t idx; IRQn_Type irqn; E_SYS_IPRST rstidx; E_SYS_IPCLK clkidx; }; typedef struct nu_timer *nu_timer_t; /* Private functions ------------------------------------------------------------*/ static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state); static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode); static void nu_timer_stop(rt_hwtimer_t *timer); static rt_uint32_t nu_timer_count_get(rt_hwtimer_t *timer); static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args); /* Public functions -------------------------------------------------------------*/ /* Private variables ------------------------------------------------------------*/ static struct nu_timer nu_timer_arr [] = { #if defined(BSP_USING_TIMER0) { .name = "timer0", .idx = 0, .irqn = IRQ_TMR0, .rstidx = TIMER0RST, .clkidx = TIMER0CKEN, }, #endif #if defined(BSP_USING_TIMER1) { .name = "timer1", .idx = 1, .irqn = IRQ_TMR1, .rstidx = TIMER1RST, .clkidx = TIMER1CKEN, }, #endif #if defined(BSP_USING_TIMER2) { .name = "timer2", .idx = 2, .irqn = IRQ_TMR2, .rstidx = TIMER2RST, .clkidx = TIMER2CKEN, }, #endif #if defined(BSP_USING_TIMER3) { .name = "timer3", .idx = 3, .irqn = IRQ_TMR3, .rstidx = TIMER3RST, .clkidx = TIMER3CKEN, }, #endif /* BSP_USING_TIMER4 is reserved for Systick usage. */ }; static struct rt_hwtimer_info nu_timer_info = { 12000000, /* maximum count frequency */ 46875, /* minimum count frequency */ 0xFFFFFF, /* the maximum counter value */ HWTIMER_CNTMODE_UP, /* Increment or Decreasing count mode */ }; static struct rt_hwtimer_ops nu_timer_ops = { nu_timer_init, nu_timer_start, nu_timer_stop, nu_timer_count_get, nu_timer_control }; /* Functions define ------------------------------------------------------------*/ static void nu_timer_init(rt_hwtimer_t *timer, rt_uint32_t state) { nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer); RT_ASSERT(psNuTmr != RT_NULL); if (1 == state) { uint32_t timer_clk; struct rt_hwtimer_info *info = &nu_timer_info; timer_clk = TIMER_GetModuleClock(psNuTmr->idx); info->maxfreq = timer_clk; info->minfreq = timer_clk / 256; TIMER_Open(psNuTmr->idx, TIMER_ONESHOT_MODE, 1); TIMER_EnableInt(psNuTmr->idx); rt_hw_interrupt_umask(psNuTmr->irqn); } else { rt_hw_interrupt_mask(psNuTmr->irqn); TIMER_DisableInt(psNuTmr->idx); TIMER_Close(psNuTmr->idx); } } static rt_err_t nu_timer_start(rt_hwtimer_t *timer, rt_uint32_t cnt, rt_hwtimer_mode_t opmode) { rt_err_t ret = -RT_EINVAL; rt_uint32_t u32OpMode; nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer); RT_ASSERT(psNuTmr != RT_NULL); if (cnt <= 1 || cnt > 0xFFFFFF) { goto exit_nu_timer_start; } switch (opmode) { case HWTIMER_MODE_PERIOD: u32OpMode = TIMER_PERIODIC_MODE; break; case HWTIMER_MODE_ONESHOT: u32OpMode = TIMER_ONESHOT_MODE; break; default: goto exit_nu_timer_start; } TIMER_SET_CMP_VALUE(psNuTmr->idx, cnt); TIMER_SET_OPMODE(psNuTmr->idx, u32OpMode); TIMER_EnableInt(psNuTmr->idx); rt_hw_interrupt_umask(psNuTmr->irqn); TIMER_Start(psNuTmr->idx); ret = RT_EOK; exit_nu_timer_start: return -(ret); } static void nu_timer_stop(rt_hwtimer_t *timer) { nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer); RT_ASSERT(psNuTmr != RT_NULL); rt_hw_interrupt_mask(psNuTmr->irqn); TIMER_DisableInt(psNuTmr->idx); TIMER_Stop(psNuTmr->idx); TIMER_ClearCounter(psNuTmr->idx); } static rt_uint32_t nu_timer_count_get(rt_hwtimer_t *timer) { nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer); RT_ASSERT(psNuTmr != RT_NULL); return TIMER_GetCounter(psNuTmr->idx); } static rt_err_t nu_timer_control(rt_hwtimer_t *timer, rt_uint32_t cmd, void *args) { rt_err_t ret = RT_EOK; nu_timer_t psNuTmr = NU_TIMER_DEVICE(timer); RT_ASSERT(psNuTmr != RT_NULL); switch (cmd) { case HWTIMER_CTRL_FREQ_SET: { uint32_t clk; uint32_t pre; clk = TIMER_GetModuleClock(psNuTmr->idx); pre = clk / *((uint32_t *)args) - 1; TIMER_SET_PRESCALE_VALUE(psNuTmr->idx, pre); *((uint32_t *)args) = clk / (pre + 1) ; } break; case HWTIMER_CTRL_STOP: TIMER_Stop(psNuTmr->idx); break; default: ret = -RT_EINVAL; break; } return -(ret); } /** * All UART interrupt service routine */ static void nu_timer_isr(int vector, void *param) { nu_timer_t psNuTmr = NU_TIMER_DEVICE(param); RT_ASSERT(psNuTmr != RT_NULL); if (TIMER_GetIntFlag(psNuTmr->idx)) { TIMER_ClearIntFlag(psNuTmr->idx); rt_device_hwtimer_isr(&psNuTmr->parent); } } int rt_hw_timer_init(void) { int i; rt_err_t ret = RT_EOK; for (i = (TIMER_START + 1); i < TIMER_CNT; i++) { nu_sys_ipclk_enable(nu_timer_arr[i].clkidx); nu_sys_ip_reset(nu_timer_arr[i].rstidx); /* Register Etimer information. */ nu_timer_arr[i].parent.info = &nu_timer_info; /* Register Etimer operation. */ nu_timer_arr[i].parent.ops = &nu_timer_ops; /* Register Etimer interrupt service routine. */ rt_hw_interrupt_install(nu_timer_arr[i].irqn, nu_timer_isr, &nu_timer_arr[i], nu_timer_arr[i].name); /* Register RT hwtimer device. */ ret = rt_device_hwtimer_register(&nu_timer_arr[i].parent, nu_timer_arr[i].name, &nu_timer_arr[i]); RT_ASSERT(ret == RT_EOK); } return 0; } INIT_BOARD_EXPORT(rt_hw_timer_init); #endif //#if defined(BSP_USING_TIMER) && defined(RT_USING_HWTIMER)