/*******************************************************************************
* 名 称： TIM4_Config
* 功 能： 配置TIM4，为定时中断10ms， 频率100Hz
* 入口参数： 无
* 出口参数： 无
* 作 者： Roger-WY
* 创建日期： 2014-08-20
* 修 改：
* 修改日期：
* 备 注：
*******************************************************************************/
static void TIM4_Config(void)
{
#if 1 /* 空间不足，优化代码 */
/* TIM4是自动重载的8位定时器，计数方向为递增，当递增到0时可以产生定时器中断，并自动重装定时器初值 */
/* 计算期望的计数时钟个数, 由于TIM4是8位的定时器，因此如果该值大于255，则需要进行分频 */
TIM4_DeInit(); /* 复位TIM4所有寄存器 */
TIM4_ARRPreloadConfig(ENABLE); /* 预先装载使能 */
TIM4_TimeBaseInit(TIM4_PRESCALER_128, (16000000u / (1000 / SYSTICK_PERIOD)) / 128); /* 设置预分频和定时器重载 */
/* Clear TIM4 update flag */
TIM4_ClearFlag(TIM4_FLAG_UPDATE);
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE); /* 使能TIM4中断 */
//TIM4_UpdateDisableConfig(ENABLE); /* 使能TIM4自动溢出事件 */
TIM4_Cmd(ENABLE); /* 使能TIM4 */
#else /* 下面这个分支，可以根据时钟自动计算TIM4定时器初值 */
uint32_t uiSysClkFreq;
uint32_t uiCount;
uiSysClkFreq = CLK_GetClockFreq(); /* 获得当前的系统时钟频率 */
TIM4_DeInit(); /* 复位TIM4所有寄存器 */
TIM4_ARRPreloadConfig(ENABLE); /* 预先装载使能 */
/* TIM4是自动重载的8位定时器，计数方向为递增，当递增到0时可以产生定时器中断，并自动重装定时器初值 */
/* 计算期望的计数时钟个数, 由于TIM4是8位的定时器，因此如果该值大于255，则需要进行分频 */
uiCount = uiSysClkFreq / (1000 / SYSTICK_PERIOD);
if (uiCount <= (1u << 8))
{
TIM4_TimeBaseInit(TIM4_PRESCALER_1, uiCount); /* 设置预分频和定时器重载 */
} else if (uiCount <= (1u << 9)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_2, uiCount / 2); /* 设置预分频和定时器重载 */
} else if (uiCount <= (1u << 10)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_4, uiCount / 4); /* 设置预分频和定时器重载 */
} else if (uiCount <= (1u << 11)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_8, uiCount / 8); /* 设置预分频和定时器重载 */
} else if (uiCount <= (1u << 12)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_16, uiCount / 16); /* 设置预分频和定时器重载 */
} else if (uiCount <= (1u << 13)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_32, uiCount / 32); /* 设置预分频和定时器重载 */
} else if (uiCount < (1u << 14)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_64, uiCount / 64); /* 设置预分频和定时器重载 */
} else if (uiCount < (1u << 15)) {
TIM4_TimeBaseInit(TIM4_PRESCALER_128, uiCount / 128); /* 设置预分频和定时器重载 */
} else {
while (1); /* 异常，死机等待排错 */
}
/* Clear TIM4 update flag */
TIM4_ClearFlag(TIM4_FLAG_UPDATE);
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE); /* 使能TIM4中断 */
//TIM4_UpdateDisableConfig(ENABLE); /* 使能TIM4自动溢出事件 */
TIM4_Cmd(ENABLE); /* 使能TIM4 */
#endif
}
void MOD_TIM_Config(Mod_Master_Frame_TypeDef* aFrame)
{
TIM2_DeInit();
TIM2_TimeBaseInit(0x0F, 1500); //2ms comm response time
TIM2_UpdateRequestConfig(TIM2_UPDATESOURCE_REGULAR);
TIM2_GenerateEvent(TIM2_EVENTSOURCE_UPDATE);
TIM2_Cmd(DISABLE);
TIM2_ClearITPendingBit(TIM2_IT_UPDATE);
TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);
TIM2_ClearFlag(TIM2_FLAG_UPDATE);
TIM4_DeInit();
TIM4_TimeBaseInit(0x07, 126); //128 * 126 = 16128 = 2ms (8MHz), frame check
TIM4_UpdateRequestConfig(TIM4_UPDATESOURCE_REGULAR);
TIM4_GenerateEvent(TIM4_EVENTSOURCE_UPDATE);
TIM4_Cmd(DISABLE);
TIM4_ClearITPendingBit(TIM4_IT_UPDATE);
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
TIM4_ClearFlag(TIM4_FLAG_UPDATE);
}
void T4_Init(void)
{
TIM4_ARRPreloadConfig(1);
TIM4_PrescalerConfig(TIM4_PRESCALER_32,TIM4_PSCRELOADMODE_IMMEDIATE); //128分频
TIM4_SetAutoreload((F_CPU/32/OS_TICKS_PER_SEC));
TIM4_Cmd(1);
TIM4_ITConfig(TIM4_IT_UPDATE,1);
}
void resetTim4For500us(void)
{
TIM4_DeInit();
TIM4_TimeBaseInit(TIM4_PRESCALER_32,250);
TIM4_ITConfig(TIM4_IT_UPDATE,ENABLE);
TIM4_ARRPreloadConfig(ENABLE);
TIM4_Cmd(ENABLE);
}
void Init_Timer4(void)
{
//1ms中断一次
TIM4_TimeBaseInit(TIM4_PRESCALER_128, 124);
/* Clear TIM4 update flag */
TIM4_ClearFlag(TIM4_FLAG_UPDATE);
/* Enable update interrupt */
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
TIM4_Cmd(ENABLE);
}
/**
* @brief Configure TIM4 to generate a software COM event each 180 ms
* @param None
* @retval None
*/
static void TIM4_Config(void)
{
/* TIM4 Peripheral Configuration */
/* Time Base configuration */
TIM4_TimeBaseInit(TIM4_PRESCALER_128, 0xFF);
/*TIM4 counter enable */
TIM4_Cmd(ENABLE);
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
}
void TIM4_Init(void)
{
TIM4_DeInit();
// 24000000/128/1000 = 187.5
/* Time base configuration */
TIM4_TimeBaseInit(TIM4_PRESCALER_128, FMASTER/128/1000); // 1ms中断
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
TIM4_Cmd(ENABLE);
}
void dev_vtimerInit(void)
{
TIM4_DeInit();
/* Time base configuration */
TIM4_TimeBaseInit(TIM4_PRESCALER_128,ARRVALUE); // Setting for 1ms Delta time
//ITC_SetSoftwarePriority(ITC_IRQ_TIM4_OVF, ITC_PRIORITYLEVEL_1);
ITC->ISPR6 |= 0xC0;
ITC->ISPR6 &= 0x7F;
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
enableInterrupts();
/* Enable TIM4 */
TIM4_Cmd(ENABLE);
}
void Tim4_init(void) {
// reset all registers
TIM4_DeInit();
// 10ms
TIM4_TimeBaseInit(TIM4_PRESCALER_128, 156);
// interrupt config
TIM4_ITConfig(TIM4_FLAG_UPDATE, ENABLE);
// source d'IT : quand on atteint la valeur.
// TIM4_UpdateRequestConfig(TIM4_UPDATESOURCE_GLOBAL); //TIM4_UPDATESOURCE_REGULAR
// tourne en boucle
TIM4_SelectOnePulseMode(TIM4_OPMODE_REPETITIVE);
// TIM4_ARR manuel
// TIM4_ARRPreloadConfig(DISABLE);
}
/**
* @brief Configure TIM4 to generate an update interrupt each 1ms
* @param None
* @retval None
*/
void TIM4_Config(void)
{
/* TIM4 configuration:
- TIM4CLK is set to 16 MHz, the TIM4 Prescaler is equal to 128 so the TIM1 counter
clock used is 16 MHz / 128 = 125 000 Hz
- With 125 000 Hz we can generate time base:
max time base is 2.048 ms if TIM4_PERIOD = 255 --> (255 + 1) / 125000 = 2.048 ms
min time base is 0.016 ms if TIM4_PERIOD = 1 --> ( 1 + 1) / 125000 = 0.016 ms
- In this example we need to generate a time base equal to 1 ms
so TIM4_PERIOD = (0.001 * 125000 - 1) = 124 */
/* Time base configuration */
TIM4_TimeBaseInit(TIM4_PRESCALER_128, TIM4_PERIOD);
/* Clear TIM4 update flag */
TIM4_ClearFlag(TIM4_FLAG_UPDATE);
/* Enable update interrupt */
TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE);
/* Enable TIM4 */
TIM4_Cmd(ENABLE);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
void main()
{
/* TIM4 & I2C clock Enable*/
CLK_PeripheralClockConfig(CLK_Peripheral_TIM4, ENABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_I2C1, ENABLE);
#ifdef FAST_I2C_MODE
/* system_clock / 1 */
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);
#else
/* system_clock / 2 */
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_2);
#endif
/* Initialize LEDs mounted on STM8L1526-EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* Initialize push-buttons mounted on STM8L1526-EVAL board */
STM_EVAL_PBInit(BUTTON_RIGHT, BUTTON_MODE_EXTI);
STM_EVAL_PBInit(BUTTON_LEFT, BUTTON_MODE_EXTI);
STM_EVAL_PBInit(BUTTON_UP, BUTTON_MODE_EXTI);
STM_EVAL_PBInit(BUTTON_DOWN, BUTTON_MODE_EXTI);
STM_EVAL_PBInit(BUTTON_SEL, BUTTON_MODE_EXTI);
/* Initialize TIM4 peripheral to generate an interrupt each 1ms */
TIM4_TimeBaseInit(TIM4_Prescaler_128, TIM4_PERIOD);
/* Enable Update interrupt */
TIM4_ITConfig(TIM4_IT_Update, ENABLE);
/* Initialize I2C peripheral */
I2C_Init(I2C1, I2C_SPEED, 0xA0,
I2C_Mode_I2C, I2C_DutyCycle_2,
I2C_Ack_Enable, I2C_AcknowledgedAddress_7bit);
/* Set I2C IT software priority as highest */
#ifdef STM8L15X_MD
ITC_SetSoftwarePriority(I2C1_IRQn, ITC_PriorityLevel_3);
#elif defined (STM8L15X_HD) || defined (STM8L15X_MDP)
ITC_SetSoftwarePriority(I2C1_SPI2_IRQn, ITC_PriorityLevel_3);
#endif /* STM8L15X_MD */
enableInterrupts();
/* Enable TIM4 */
TIM4_Cmd(ENABLE);
while (1)
{
switch (PressedButton)
{
case BUTTON_RIGHT:
PressedButton = NO_BUTTON;
NumOfBytes = 1;
TxBuffer[NumOfBytes-1] = 0x01;
ButtonPressed = 1;
break;
case BUTTON_LEFT:
PressedButton = NO_BUTTON;
NumOfBytes = 1;
TxBuffer[NumOfBytes-1] = 0x02;
ButtonPressed = 1;
break;
case BUTTON_UP:
PressedButton = NO_BUTTON;
NumOfBytes = 1;
TxBuffer[NumOfBytes-1] = 0x03;
ButtonPressed = 1;
break;
case BUTTON_DOWN:
PressedButton = NO_BUTTON;
NumOfBytes = 1;
TxBuffer[NumOfBytes-1] = 0x04;
ButtonPressed = 1;
break;
case BUTTON_SEL:
PressedButton = NO_BUTTON;
NumOfBytes = BUFFERSIZE;
TxBuffer[0] = 0xAA;
ButtonPressed = 1;
for (i = 1; i < NumOfBytes; i++)
{
TxBuffer[i] = i;
}
break;
default:
break;
}
if (ButtonPressed == 1)
{
/* Enable Buffer and Event Interrupt*/
I2C_ITConfig(I2C1, (I2C_IT_TypeDef)(I2C_IT_EVT | I2C_IT_BUF) , ENABLE);
/* Generate the Start condition */
I2C_GenerateSTART(I2C1, ENABLE);
/*
Data transfer is performed in the I2C interrupt routine
*/
/* Wait until end of data transfer */
while (NumOfBytes);
while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
/* Make sure that the STOP bit is cleared by Hardware before CR2 write access */
while ((I2C1->CR2 & I2C_CR2_STOP) == I2C_CR2_STOP);
ButtonPressed = 0;
}
}
}
void Config()
{
//System clock at power up is HSI/8 = 16MHz/8 = 2MHz
//CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1); //set HSI/4 = 4MHz SysClk to Core and Memory, minimum clock = 125KHz for CLK_SYSCLKDiv_128
//PWR_PVDCmd(ENABLE); //Power voltage detector and brownout Reset unit supply current 2,6uA
//PWR_PVDLevelConfig(PWR_PVDLevel_2V26); //set Programmable voltage detector threshold to 2,26V
//PWR_GetFlagStatus(PWR_FLAG_PVDOF); //checks whether the specified PWR flag is set or not
//Configure external interrupts - BTN1 and BTN2 presses
//EXTI_SetPinSensitivity(EXTI_Pin_2, EXTI_Trigger_Falling_Low);
//EXTI_SetPinSensitivity(EXTI_Pin_4, EXTI_Trigger_Falling_Low);
//EXTI_SelectPort(EXTI_Port_B);
//EXTI_SetHalfPortSelection(EXTI_HalfPort_B_MSB, ENABLE);
// Timer 4 Configuration
CLK_PeripheralClockConfig(CLK_Peripheral_TIM4, ENABLE); // 8bit: used for system periodic flags and timeouts
TIM4_TimeBaseInit(TIM4_Prescaler_16, 125); // Overflow at 1ms, 2MHz/16/125 = 1000
TIM4_ITConfig(TIM4_IT_Update, ENABLE);
TIM4_Cmd(ENABLE);
// Timer 2 Configuration
CLK_PeripheralClockConfig(CLK_Peripheral_TIM2, ENABLE); // 16bit: used for runtime measurement
TIM2_TimeBaseInit(TIM2_Prescaler_2, TIM2_CounterMode_Up, 0xFFFF); // timebase of 1us, 2MHz/2=1M
TIM2_Cmd(ENABLE);
// Timer3 Configuration
CLK_PeripheralClockConfig(CLK_Peripheral_TIM3, ENABLE);
TIM3_TimeBaseInit(TIM3_Prescaler_2, TIM3_CounterMode_Up, 0xFFFF); // 1us timebase @ 2MHz system clock
TIM3_ICInit(TIM3_Channel_2,
TIM3_ICPolarity_Falling,
TIM3_ICSelection_IndirectTI,
TIM3_ICPSC_Div1,
0);
TIM3_ICInit(TIM3_Channel_1,
TIM3_ICPolarity_Rising,
TIM3_ICSelection_DirectTI,
TIM3_ICPSC_Div1,
0);
TIM3_SelectInputTrigger(TIM3_TRGSelection_TI1FP1);
TIM3_SelectSlaveMode(TIM3_SlaveMode_Reset); // Reset timer on selected trigger signal
TIM3_ITConfig(TIM3_IT_CC1, ENABLE);
TIM3_ITConfig(TIM3_IT_CC2, ENABLE);
TIM3_Cmd(ENABLE);
/* Output PP High - bicolor LED to GND */
GPIO_Init(LED_PORT, LED_PIN1, GPIO_Mode_Out_PP_Low_Slow);
GPIO_Init(LED_PORT, LED_PIN2, GPIO_Mode_Out_PP_Low_Slow);
/* Input pull up no IT - onboard Button, external pull-up */
GPIO_Init(BTN1_PORT, BTN1_PIN, GPIO_Mode_In_FL_No_IT);
/* RFM85W pins */
GPIO_Init(RFM_DATA_PORT, RFM_DATA_PIN, GPIO_Mode_In_FL_No_IT);
/* DEBUG pin */
GPIO_Init(DEBUG_PIN_PORT, DEBUG_PIN_PIN, GPIO_Mode_Out_PP_Low_Fast);
/* H bridge outputs */
GPIO_Init(PMOS_L_PORT, PMOS_L_PIN, GPIO_Mode_Out_PP_High_Fast);
GPIO_Init(PMOS_R_PORT, PMOS_R_PIN, GPIO_Mode_Out_PP_High_Fast);
GPIO_Init(NMOS_L_PORT, NMOS_L_PIN, GPIO_Mode_Out_PP_Low_Fast);
GPIO_Init(NMOS_R_PORT, NMOS_R_PIN, GPIO_Mode_Out_PP_Low_Fast);
}
void stopTim4(void)
{
TIM4_ITConfig(TIM4_IT_UPDATE,DISABLE);
TIM4_Cmd(DISABLE);
}
void tim4_config(void)
{
TIM4_TimeBaseInit(TIM4_Prescaler_1024,0xFF);
TIM4_ITConfig(TIM4_IT_Update,ENABLE);
TIM4_Cmd(DISABLE);
};