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Diffstat (limited to 'third_party/TouchSense/STMTouch_Driver')
-rw-r--r--third_party/TouchSense/STMTouch_Driver/src/tsl_time_stm32f0xx.c38
1 files changed, 14 insertions, 24 deletions
diff --git a/third_party/TouchSense/STMTouch_Driver/src/tsl_time_stm32f0xx.c b/third_party/TouchSense/STMTouch_Driver/src/tsl_time_stm32f0xx.c
index 4db154a..d8390d4 100644
--- a/third_party/TouchSense/STMTouch_Driver/src/tsl_time_stm32f0xx.c
+++ b/third_party/TouchSense/STMTouch_Driver/src/tsl_time_stm32f0xx.c
@@ -44,22 +44,12 @@
*/
TSL_Status_enum_T TSL_tim_Init(void)
{
- // Program one systick interrupt every (1 / TSLPRM_TICK_FREQ) ms
-// if (SysTick_Config(SystemCoreClock / TSLPRM_TICK_FREQ))
-// {
-// return TSL_STATUS_ERROR;
-// }
-// else
-// {
-// return TSL_STATUS_OK;
-// }
-
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
-
+
/* TouchSense_TIMx clock enable */
TS_RCC_APBxPeriphClockCmd ( TS_TIM_RCC, ENABLE );
-
+
/* Enable the TouchSense_TIMx gloabal Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TS_TIM_IRQx;
NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
@@ -69,38 +59,38 @@ TSL_Status_enum_T TSL_tim_Init(void)
/* -----------------------------------------------------------------------
In this example TIM7 counter clock (TIM7CLK) is set to APB1 clock (PCLK1), since
APB1 prescaler is set to 1 and TIM7 prescaler is set to 0.
-
- In this example TIM7 input clock (TIM7CLK) is set to APB1 clock (PCLK1),
- since APB1 prescaler is set to 1.
+
+ In this example TIM7 input clock (TIM7CLK) is set to APB1 clock (PCLK1),
+ since APB1 prescaler is set to 1.
TIM7CLK = PCLK1 = HCLK = SystemCoreClock
-
+
With Prescaler set to 479 and Period to 24999, the TIM7 counter is updated each 250 ms
(i.e. and interrupt is generated each 250 ms)
TIM7 counter clock = TIM7CLK /((Prescaler + 1)*(Period + 1))
= 48 MHz / ((25000)*(480))
- = 4 Hz
+ = 4 Hz
==> TIM7 counter period = 250 ms
Note:
SystemCoreClock variable holds HCLK frequency and is defined in system_stm32f0xx.c file.
Each time the core clock (HCLK) changes, user had to call SystemCoreClockUpdate()
function to update SystemCoreClock variable value. Otherwise, any configuration
- based on this variable will be incorrect.
- ----------------------------------------------------------------------- */
-
+ based on this variable will be incorrect.
+ ----------------------------------------------------------------------- */
+
/* Time base configuration */
- TIM_TimeBaseStructure.TIM_Period = 1000; // Это миксросекунды //24999
+ TIM_TimeBaseStructure.TIM_Period = 1000; // Это миксросекунды //24999
TIM_TimeBaseStructure.TIM_Prescaler = (SystemCoreClock/1000000)-1; //479;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit ( TS_TIMx, &TIM_TimeBaseStructure );
-
+
/* TouchSense_TIMx Interrupts enable */
TIM_ITConfig ( TS_TIMx, TIM_IT_Update, ENABLE );
-
+
/* TouchSense_TIMx enable counter */
TIM_Cmd ( TS_TIMx, ENABLE );
-
+
return TSL_STATUS_OK;
}