246 lines
7.2 KiB
C
246 lines
7.2 KiB
C
#include <furi_hal_clock.h>
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#include <furi_hal_resources.h>
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#include <furi.h>
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#include <stm32wbxx_ll_pwr.h>
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#include <stm32wbxx_ll_rcc.h>
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#include <stm32wbxx_ll_utils.h>
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#include <stm32wbxx_ll_cortex.h>
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#define TAG "FuriHalClock"
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#define CPU_CLOCK_HZ_EARLY 4000000
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#define CPU_CLOCK_HZ_MAIN 64000000
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#define TICK_INT_PRIORITY 15U
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#define HS_CLOCK_IS_READY() (LL_RCC_HSE_IsReady() && LL_RCC_HSI_IsReady())
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#define LS_CLOCK_IS_READY() (LL_RCC_LSE_IsReady() && LL_RCC_LSI1_IsReady())
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void furi_hal_clock_init_early() {
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LL_SetSystemCoreClock(CPU_CLOCK_HZ_EARLY);
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LL_Init1msTick(SystemCoreClock);
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}
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void furi_hal_clock_deinit_early() {
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}
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void furi_hal_clock_init() {
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/* Prepare Flash memory for 64MHz system clock */
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LL_FLASH_SetLatency(LL_FLASH_LATENCY_3);
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while(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_3)
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;
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/* HSE and HSI configuration and activation */
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LL_RCC_HSE_SetCapacitorTuning(0x26);
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LL_RCC_HSE_Enable();
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LL_RCC_HSI_Enable();
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while(!HS_CLOCK_IS_READY())
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;
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/* Select HSI as system clock source after Wake Up from Stop mode
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* Must be set before enabling CSS */
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LL_RCC_SetClkAfterWakeFromStop(LL_RCC_STOP_WAKEUPCLOCK_HSI);
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LL_RCC_HSE_EnableCSS();
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/* LSE and LSI1 configuration and activation */
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LL_PWR_EnableBkUpAccess();
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LL_RCC_LSE_SetDriveCapability(LL_RCC_LSEDRIVE_HIGH);
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LL_RCC_LSE_Enable();
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LL_RCC_LSI1_Enable();
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while(!LS_CLOCK_IS_READY())
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;
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/* RF wakeup */
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LL_RCC_SetRFWKPClockSource(LL_RCC_RFWKP_CLKSOURCE_LSE);
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LL_EXTI_EnableIT_0_31(
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LL_EXTI_LINE_18); /* Why? Because that's why. See RM0434, Table 61. CPU1 vector table. */
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LL_EXTI_EnableRisingTrig_0_31(LL_EXTI_LINE_18);
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LL_RCC_EnableIT_LSECSS();
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/* ES0394, extended case of 2.2.2 */
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if(!LL_RCC_IsActiveFlag_BORRST()) {
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LL_RCC_LSE_EnableCSS();
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}
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/* Main PLL configuration and activation */
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LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE, LL_RCC_PLLM_DIV_2, 8, LL_RCC_PLLR_DIV_2);
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LL_RCC_PLL_Enable();
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LL_RCC_PLL_EnableDomain_SYS();
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while(LL_RCC_PLL_IsReady() != 1)
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;
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LL_RCC_PLLSAI1_ConfigDomain_48M(
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LL_RCC_PLLSOURCE_HSE, LL_RCC_PLLM_DIV_2, 6, LL_RCC_PLLSAI1Q_DIV_2);
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LL_RCC_PLLSAI1_ConfigDomain_ADC(
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LL_RCC_PLLSOURCE_HSE, LL_RCC_PLLM_DIV_2, 6, LL_RCC_PLLSAI1R_DIV_2);
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LL_RCC_PLLSAI1_Enable();
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LL_RCC_PLLSAI1_EnableDomain_48M();
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LL_RCC_PLLSAI1_EnableDomain_ADC();
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while(LL_RCC_PLLSAI1_IsReady() != 1)
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;
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/* Sysclk activation on the main PLL */
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/* Set CPU1 prescaler*/
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LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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/* Set CPU2 prescaler*/
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LL_C2_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_2);
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
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while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
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;
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/* Set AHB SHARED prescaler*/
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LL_RCC_SetAHB4Prescaler(LL_RCC_SYSCLK_DIV_1);
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/* Set APB1 prescaler*/
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LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
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/* Set APB2 prescaler*/
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LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
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/* Disable MSI */
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LL_RCC_MSI_Disable();
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while(LL_RCC_MSI_IsReady() != 0)
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;
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/* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
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LL_SetSystemCoreClock(CPU_CLOCK_HZ_MAIN);
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/* Update the time base */
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LL_Init1msTick(SystemCoreClock);
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LL_SYSTICK_EnableIT();
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NVIC_SetPriority(
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SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), TICK_INT_PRIORITY, 0));
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NVIC_EnableIRQ(SysTick_IRQn);
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LL_RCC_SetCLK48ClockSource(LL_RCC_CLK48_CLKSOURCE_PLLSAI1);
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LL_RCC_HSI_EnableInStopMode(); // Ensure that MR is capable of work in STOP0
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LL_RCC_SetSMPSClockSource(LL_RCC_SMPS_CLKSOURCE_HSI);
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LL_RCC_SetSMPSPrescaler(LL_RCC_SMPS_DIV_1);
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LL_RCC_SetRFWKPClockSource(LL_RCC_RFWKP_CLKSOURCE_LSE);
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FURI_LOG_I(TAG, "Init OK");
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}
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void furi_hal_clock_switch_to_hsi() {
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LL_RCC_HSI_Enable();
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while(!LL_RCC_HSI_IsReady())
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;
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);
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furi_assert(LL_RCC_GetSMPSClockSource() == LL_RCC_SMPS_CLKSOURCE_HSI);
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while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
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;
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LL_C2_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);
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while(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_0)
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;
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}
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void furi_hal_clock_switch_to_pll() {
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#ifdef FURI_HAL_CLOCK_TRACK_STARTUP
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uint32_t clock_start_time = DWT->CYCCNT;
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#endif
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LL_RCC_HSE_Enable();
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LL_RCC_PLL_Enable();
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LL_RCC_PLLSAI1_Enable();
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while(!LL_RCC_HSE_IsReady())
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;
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while(!LL_RCC_PLL_IsReady())
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;
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while(!LL_RCC_PLLSAI1_IsReady())
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;
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LL_C2_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_2);
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LL_FLASH_SetLatency(LL_FLASH_LATENCY_3);
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while(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_3)
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;
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
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while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
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;
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#ifdef FURI_HAL_CLOCK_TRACK_STARTUP
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uint32_t total = DWT->CYCCNT - clock_start_time;
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if(total > (20 * 0x148)) {
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furi_crash("Slow HSE/PLL startup");
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}
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#endif
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}
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void furi_hal_clock_suspend_tick() {
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CLEAR_BIT(SysTick->CTRL, SysTick_CTRL_ENABLE_Msk);
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}
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void furi_hal_clock_resume_tick() {
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SET_BIT(SysTick->CTRL, SysTick_CTRL_ENABLE_Msk);
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}
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void furi_hal_clock_mco_enable(FuriHalClockMcoSourceId source, FuriHalClockMcoDivisorId div) {
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if(source == FuriHalClockMcoLse) {
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LL_RCC_ConfigMCO(LL_RCC_MCO1SOURCE_LSE, div);
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} else if(source == FuriHalClockMcoSysclk) {
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LL_RCC_ConfigMCO(LL_RCC_MCO1SOURCE_SYSCLK, div);
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} else {
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LL_RCC_MSI_Enable();
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while(LL_RCC_MSI_IsReady() != 1)
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;
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switch(source) {
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case FuriHalClockMcoMsi100k:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_0);
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break;
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case FuriHalClockMcoMsi200k:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_1);
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break;
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case FuriHalClockMcoMsi400k:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_2);
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break;
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case FuriHalClockMcoMsi800k:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_3);
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break;
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case FuriHalClockMcoMsi1m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_4);
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break;
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case FuriHalClockMcoMsi2m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_5);
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break;
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case FuriHalClockMcoMsi4m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_6);
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break;
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case FuriHalClockMcoMsi8m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_7);
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break;
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case FuriHalClockMcoMsi16m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_8);
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break;
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case FuriHalClockMcoMsi24m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_9);
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break;
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case FuriHalClockMcoMsi32m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_10);
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break;
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case FuriHalClockMcoMsi48m:
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LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_11);
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break;
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default:
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break;
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}
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LL_RCC_ConfigMCO(LL_RCC_MCO1SOURCE_MSI, div);
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}
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}
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void furi_hal_clock_mco_disable() {
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LL_RCC_ConfigMCO(LL_RCC_MCO1SOURCE_NOCLOCK, FuriHalClockMcoDiv1);
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LL_RCC_MSI_Disable();
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while(LL_RCC_MSI_IsReady() != 0)
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;
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}
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