TIM5: free running timer with [us] resolution

- usTimerGetAbs
- usTimerGetRel
- Delay_us

.mxproject

@@ -1,8 +1,8 @@
 [PreviousLibFiles]
-LibFiles=Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_gpio.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_system.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_exti.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_cortex.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_bus.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_rcc.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_crs.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_utils.h;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_pwr.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dma.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dmamux.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_icache.h;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_gpio.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_rcc.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_icache.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_pwr.c;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_gpio.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_system.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_exti.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_cortex.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_bus.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_rcc.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_crs.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_utils.h;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_pwr.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dma.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dmamux.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_icache.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\stm32h533xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\stm32h5xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\system_stm32h5xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\system_stm32h5xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Source\Templates\system_stm32h5xx.c;Drivers\CMSIS\Include\cachel1_armv7.h;Drivers\CMSIS\Include\cmsis_armcc.h;Drivers\CMSIS\Include\cmsis_armclang.h;Drivers\CMSIS\Include\cmsis_armclang_ltm.h;Drivers\CMSIS\Include\cmsis_compiler.h;Drivers\CMSIS\Include\cmsis_gcc.h;Drivers\CMSIS\Include\cmsis_iccarm.h;Drivers\CMSIS\Include\cmsis_version.h;Drivers\CMSIS\Include\core_armv81mml.h;Drivers\CMSIS\Include\core_armv8mbl.h;Drivers\CMSIS\Include\core_armv8mml.h;Drivers\CMSIS\Include\core_cm0.h;Drivers\CMSIS\Include\core_cm0plus.h;Drivers\CMSIS\Include\core_cm1.h;Drivers\CMSIS\Include\core_cm23.h;Drivers\CMSIS\Include\core_cm3.h;Drivers\CMSIS\Include\core_cm33.h;Drivers\CMSIS\Include\core_cm35p.h;Drivers\CMSIS\Include\core_cm4.h;Drivers\CMSIS\Include\core_cm55.h;Drivers\CMSIS\Include\core_cm7.h;Drivers\CMSIS\Include\core_cm85.h;Drivers\CMSIS\Include\core_sc000.h;Drivers\CMSIS\Include\core_sc300.h;Drivers\CMSIS\Include\core_starmc1.h;Drivers\CMSIS\Include\mpu_armv7.h;Drivers\CMSIS\Include\mpu_armv8.h;Drivers\CMSIS\Include\pac_armv81.h;Drivers\CMSIS\Include\pmu_armv8.h;Drivers\CMSIS\Include\tz_context.h;
+LibFiles=Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_gpio.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_system.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_exti.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_cortex.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_bus.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_rcc.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_crs.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_utils.h;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_pwr.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dma.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dmamux.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_icache.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_tim.h;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_gpio.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_rcc.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_icache.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_pwr.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_tim.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_dma.c;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_gpio.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_system.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_exti.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_cortex.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_bus.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_rcc.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_crs.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_utils.h;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_pwr.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dma.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_dmamux.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_icache.h;Drivers\STM32H5xx_HAL_Driver\Inc\stm32h5xx_ll_tim.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\stm32h533xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\stm32h5xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\system_stm32h5xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Include\system_stm32h5xx.h;Drivers\CMSIS\Device\ST\STM32H5xx\Source\Templates\system_stm32h5xx.c;Drivers\CMSIS\Include\cachel1_armv7.h;Drivers\CMSIS\Include\cmsis_armcc.h;Drivers\CMSIS\Include\cmsis_armclang.h;Drivers\CMSIS\Include\cmsis_armclang_ltm.h;Drivers\CMSIS\Include\cmsis_compiler.h;Drivers\CMSIS\Include\cmsis_gcc.h;Drivers\CMSIS\Include\cmsis_iccarm.h;Drivers\CMSIS\Include\cmsis_version.h;Drivers\CMSIS\Include\core_armv81mml.h;Drivers\CMSIS\Include\core_armv8mbl.h;Drivers\CMSIS\Include\core_armv8mml.h;Drivers\CMSIS\Include\core_cm0.h;Drivers\CMSIS\Include\core_cm0plus.h;Drivers\CMSIS\Include\core_cm1.h;Drivers\CMSIS\Include\core_cm23.h;Drivers\CMSIS\Include\core_cm3.h;Drivers\CMSIS\Include\core_cm33.h;Drivers\CMSIS\Include\core_cm35p.h;Drivers\CMSIS\Include\core_cm4.h;Drivers\CMSIS\Include\core_cm55.h;Drivers\CMSIS\Include\core_cm7.h;Drivers\CMSIS\Include\core_cm85.h;Drivers\CMSIS\Include\core_sc000.h;Drivers\CMSIS\Include\core_sc300.h;Drivers\CMSIS\Include\core_starmc1.h;Drivers\CMSIS\Include\mpu_armv7.h;Drivers\CMSIS\Include\mpu_armv8.h;Drivers\CMSIS\Include\pac_armv81.h;Drivers\CMSIS\Include\pmu_armv8.h;Drivers\CMSIS\Include\tz_context.h;
 
 [PreviousUsedCubeIDEFiles]
-SourceFiles=Core\Src\main.c;Core\Src\stm32h5xx_it.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_gpio.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_rcc.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_icache.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_pwr.c;Drivers\CMSIS\Device\ST\STM32H5xx\Source\Templates\system_stm32h5xx.c;Core\Src\system_stm32h5xx.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_gpio.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_rcc.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_icache.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_pwr.c;Drivers\CMSIS\Device\ST\STM32H5xx\Source\Templates\system_stm32h5xx.c;Core\Src\system_stm32h5xx.c;;;
+SourceFiles=Core\Src\main.c;Core\Src\stm32h5xx_it.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_gpio.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_rcc.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_icache.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_pwr.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_tim.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_dma.c;Drivers\CMSIS\Device\ST\STM32H5xx\Source\Templates\system_stm32h5xx.c;Core\Src\system_stm32h5xx.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_utils.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_exti.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_gpio.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_rcc.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_icache.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_pwr.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_tim.c;Drivers\STM32H5xx_HAL_Driver\Src\stm32h5xx_ll_dma.c;Drivers\CMSIS\Device\ST\STM32H5xx\Source\Templates\system_stm32h5xx.c;Core\Src\system_stm32h5xx.c;;;
 HeaderPath=Drivers\STM32H5xx_HAL_Driver\Inc;Drivers\CMSIS\Device\ST\STM32H5xx\Include;Drivers\CMSIS\Include;Core\Inc;
 CDefines=USE_FULL_LL_DRIVER;HSE_VALUE:16000000;HSE_STARTUP_TIMEOUT:100;LSE_STARTUP_TIMEOUT:5000;LSE_VALUE:32768;EXTERNAL_CLOCK_VALUE:12288000;HSI_VALUE:64000000;LSI_VALUE:32000;VDD_VALUE:3300;STM32H533xx;USE_FULL_LL_DRIVER;HSE_VALUE:16000000;HSE_STARTUP_TIMEOUT:100;LSE_STARTUP_TIMEOUT:5000;LSE_VALUE:32768;EXTERNAL_CLOCK_VALUE:12288000;HSI_VALUE:64000000;LSI_VALUE:32000;VDD_VALUE:3300;
 

Core/Inc/main.h

@@ -37,6 +37,7 @@ extern "C" {
 #include "stm32h5xx_ll_cortex.h"
 #include "stm32h5xx_ll_utils.h"
 #include "stm32h5xx_ll_dma.h"
+#include "stm32h5xx_ll_tim.h"
 #include "stm32h5xx_ll_gpio.h"
 
 #if defined(USE_FULL_ASSERT)
@@ -93,7 +94,28 @@ void Error_Handler(void);
 #endif
 
 /* USER CODE BEGIN Private defines */
-static inline void Delay_us() { LL_mDelay(1); } // TODO: implement real microsecond delay
+
+/***************************************************************************//**
+* @brief Read actual counter value of general purpose [us] timer
+* @return Timer value [us]
+*//****************************************************************************/
+static inline uint32_t usTimerGetAbs (void) {
+   return LL_TIM_GetCounter(TIM5);
+}
+
+/***************************************************************************//**
+* @brief Get [us] difference between actual timer value and reference time
+* @param tref  reference time
+* @return time difference [us]
+*//****************************************************************************/
+static inline int32_t usTimerGetRel(uint32_t tref) {
+   return LL_TIM_GetCounter(TIM5) - tref;
+}
+
+static inline void Delay_us(uint32_t t_us) {
+   uint32_t tref = usTimerGetAbs();
+   while (usTimerGetRel(tref) <= t_us);
+}
 
 // Shift register control macros
 #define SHR_COUNT    4

Core/Src/main.c

@@ -50,6 +50,7 @@
 void SystemClock_Config(void);
 static void MX_GPIO_Init(void);
 static void MX_ICACHE_Init(void);
+static void MX_TIM5_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -98,7 +99,10 @@ int main(void)
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
   MX_ICACHE_Init();
+  MX_TIM5_Init();
   /* USER CODE BEGIN 2 */
+  LL_TIM_GenerateEvent_UPDATE(TIM5);
+  LL_TIM_EnableCounter(TIM5);
 
   LL_Init1msTick(SystemCoreClock);
 
@@ -115,7 +119,7 @@ int main(void)
    while (1)
    {
       LD2_Toggle();
-      LL_mDelay(250);
+      Delay_us(1000000);   // 1s delay
       static uint8_t cnt = 0;
       DispPutDigit(0, '0'+cnt, 0);
       DispPutDigit(1, 'a'+cnt, 1);
@@ -210,6 +214,41 @@ static void MX_ICACHE_Init(void)
 
 }
 
+/**
+  * @brief TIM5 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_TIM5_Init(void)
+{
+
+  /* USER CODE BEGIN TIM5_Init 0 */
+
+  /* USER CODE END TIM5_Init 0 */
+
+  LL_TIM_InitTypeDef TIM_InitStruct = {0};
+
+  /* Peripheral clock enable */
+  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM5);
+
+  /* USER CODE BEGIN TIM5_Init 1 */
+
+  /* USER CODE END TIM5_Init 1 */
+  TIM_InitStruct.Prescaler = 79;
+  TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
+  TIM_InitStruct.Autoreload = 4294967295;
+  TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
+  LL_TIM_Init(TIM5, &TIM_InitStruct);
+  LL_TIM_DisableARRPreload(TIM5);
+  LL_TIM_SetClockSource(TIM5, LL_TIM_CLOCKSOURCE_INTERNAL);
+  LL_TIM_SetTriggerOutput(TIM5, LL_TIM_TRGO_RESET);
+  LL_TIM_DisableMasterSlaveMode(TIM5);
+  /* USER CODE BEGIN TIM5_Init 2 */
+
+  /* USER CODE END TIM5_Init 2 */
+
+}
+
 /**
   * @brief GPIO Initialization Function
   * @param None

DigitalAudioH533.ioc

@@ -53,7 +53,8 @@ Mcu.IP5=NVIC
 Mcu.IP6=PWR
 Mcu.IP7=RCC
 Mcu.IP8=SYS
-Mcu.IPNb=9
+Mcu.IP9=TIM5
+Mcu.IPNb=10
 Mcu.Name=STM32H533RETx
 Mcu.Package=LQFP64
 Mcu.Pin0=PC14-OSC32_IN(OSC32_IN)
@@ -61,8 +62,9 @@ Mcu.Pin1=PC15-OSC32_OUT(OSC32_OUT)
 Mcu.Pin10=VP_PWR_VS_SECSignals
 Mcu.Pin11=VP_PWR_VS_LPOM
 Mcu.Pin12=VP_SYS_VS_Systick
-Mcu.Pin13=VP_BOOTPATH_VS_BOOTPATH
+Mcu.Pin13=VP_TIM5_VS_ClockSourceINT
-Mcu.Pin14=VP_MEMORYMAP_VS_MEMORYMAP
+Mcu.Pin14=VP_BOOTPATH_VS_BOOTPATH
+Mcu.Pin15=VP_MEMORYMAP_VS_MEMORYMAP
 Mcu.Pin2=PH0-OSC_IN(PH0)
 Mcu.Pin3=PH1-OSC_OUT(PH1)
 Mcu.Pin4=PA13(JTMS/SWDIO)
@@ -71,7 +73,7 @@ Mcu.Pin6=PC11
 Mcu.Pin7=PB8
 Mcu.Pin8=VP_CORTEX_M33_NS_VS_Hclk
 Mcu.Pin9=VP_ICACHE_VS_ICACHE
-Mcu.PinsNb=15
+Mcu.PinsNb=16
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32H533RETx
@@ -153,7 +155,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-LL-false,2-MX_GPIO_Init-GPIO-false-LL-true,3-MX_ICACHE_Init-ICACHE-false-LL-true,0-MX_CORTEX_M33_NS_Init-CORTEX_M33_NS-false-LL-true,0-MX_PWR_Init-PWR-false-LL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-LL-false,2-MX_GPIO_Init-GPIO-false-LL-true,3-MX_ICACHE_Init-ICACHE-false-LL-true,4-MX_TIM5_Init-TIM5-false-LL-true,0-MX_CORTEX_M33_NS_Init-CORTEX_M33_NS-false-LL-true,0-MX_PWR_Init-PWR-false-LL-true
 RCC.ADCFreq_Value=80000000
 RCC.AHBFreq_Value=80000000
 RCC.APB1Freq_Value=80000000
@@ -229,6 +231,8 @@ RCC.VCOInputFreq_Value=16000000
 RCC.VCOOutputFreq_Value=320000000
 RCC.VCOPLL2OutputFreq_Value=160000000
 RCC.VCOPLL3OutputFreq_Value=64000000
+TIM5.IPParameters=Prescaler
+TIM5.Prescaler=79
 VP_BOOTPATH_VS_BOOTPATH.Mode=BP_Activate
 VP_BOOTPATH_VS_BOOTPATH.Signal=BOOTPATH_VS_BOOTPATH
 VP_CORTEX_M33_NS_VS_Hclk.Mode=Hclk_Mode
@@ -243,4 +247,6 @@ VP_PWR_VS_SECSignals.Mode=Security/Privilege
 VP_PWR_VS_SECSignals.Signal=PWR_VS_SECSignals
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
+VP_TIM5_VS_ClockSourceINT.Mode=Internal
+VP_TIM5_VS_ClockSourceINT.Signal=TIM5_VS_ClockSourceINT
 board=custom