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| author | Uladzimir Pylinski <barthess@yandex.ru> | 2016-02-18 20:51:06 +0300 |
|---|---|---|
| committer | Uladzimir Pylinski <barthess@yandex.ru> | 2016-02-18 20:51:06 +0300 |
| commit | b634bd9beef41b5b141b994efa4ac3d55505d0c4 (patch) | |
| tree | 38550a82a8a6a27ef1c6846ccf2594074e82dd2e /testhal/STM32/STM32F3xx/TIMCAP/main.c | |
| parent | d56a6f02425c6b7780953dc99fb5d0966165ec59 (diff) | |
| parent | 499335cd61ae6daadf828b2ab2b3f8b40c0f7c03 (diff) | |
| download | ChibiOS-Contrib-b634bd9beef41b5b141b994efa4ac3d55505d0c4.tar.gz ChibiOS-Contrib-b634bd9beef41b5b141b994efa4ac3d55505d0c4.tar.bz2 ChibiOS-Contrib-b634bd9beef41b5b141b994efa4ac3d55505d0c4.zip | |
Merge pull request #43 from fpoussin/timcap-pull
TIMCAP Driver
Merged pull request #43 from fpoussin/timcap-pull. Original driver: https://github.com/dsigma/ChibiOS/tree/master/demos/ARMCM4-STM32F407-WAVESHARE-OPEN-407I-C-TIM_CAP/timcap
Diffstat (limited to 'testhal/STM32/STM32F3xx/TIMCAP/main.c')
| -rw-r--r-- | testhal/STM32/STM32F3xx/TIMCAP/main.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/testhal/STM32/STM32F3xx/TIMCAP/main.c b/testhal/STM32/STM32F3xx/TIMCAP/main.c new file mode 100644 index 0000000..dd91924 --- /dev/null +++ b/testhal/STM32/STM32F3xx/TIMCAP/main.c @@ -0,0 +1,194 @@ +/*
+ ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include "ch.h"
+#include "hal.h"
+
+
+static uint8_t TIM3CC1CaptureNumber, TIM3CC2CaptureNumber;
+static uint16_t TIM3CC1ReadValue1, TIM3CC1ReadValue2;
+static uint16_t TIM3CC2ReadValue1, TIM3CC2ReadValue2;
+static bool TIM3CC1UD, TIM3CC2UD;
+
+static uint16_t freq1, freq2;
+
+
+void reEnableInputCapture(TIMCAPDriver *timcapp)
+{
+
+ if ((timcapp->tim->DIER & TIM_DIER_CC1IE) == 0)
+ {
+ TIM3CC1CaptureNumber = 0;
+ TIM3CC1UD = false;
+ timcapp->tim->DIER |= TIM_DIER_CC1IE;
+ }
+
+ if ((timcapp->tim->DIER & TIM_DIER_CC2IE) == 0)
+ {
+ TIM3CC2CaptureNumber = 0;
+ TIM3CC2UD = false;
+ timcapp->tim->DIER |= TIM_DIER_CC2IE;
+ }
+
+}
+
+void captureOverflowCb(TIMCAPDriver *timcapp)
+{
+ if (TIM3CC1UD && (timcapp->tim->DIER & TIM_DIER_CC1IE))
+ {
+ timcapp->tim->DIER &= ~TIM_DIER_CC1IE;
+ freq1 = 0;
+ }
+
+ if (TIM3CC2UD && (timcapp->tim->DIER & TIM_DIER_CC2IE))
+ {
+ timcapp->tim->DIER &= ~TIM_DIER_CC2IE;
+ freq2 = 0;
+ }
+
+ TIM3CC1UD = true;
+ TIM3CC2UD = true;
+}
+
+void capture1Cb(TIMCAPDriver *timcapp)
+{
+ if(TIM3CC1CaptureNumber == 0)
+ {
+ /* Get the Input Capture value */
+ TIM3CC1ReadValue1 = timcapp->tim->CCR[0];
+ TIM3CC1CaptureNumber = 1;
+ TIM3CC1UD = false;
+ }
+ else if(TIM3CC1CaptureNumber == 1)
+ {
+ uint32_t Capture;
+ /* Get the Input Capture value */
+ TIM3CC1ReadValue2 = timcapp->tim->CCR[0];
+ TIM3CC1UD = false;
+
+ /* Capture computation */
+ if (TIM3CC1ReadValue2 > TIM3CC1ReadValue1)
+ {
+ Capture = ((uint32_t)TIM3CC1ReadValue2 - (uint32_t)TIM3CC1ReadValue1);
+ }
+ else
+ {
+ Capture = (((uint32_t)TIM3CC1ReadValue2 + 0x10000) - (uint32_t)TIM3CC1ReadValue1);
+ }
+
+ /* Frequency computation */
+ freq1 = (timcapp->config->frequency / Capture);
+
+ TIM3CC1ReadValue1 = TIM3CC1ReadValue2;
+ TIM3CC1CaptureNumber = 0;
+
+ /* Disable CC1 interrupt */
+ timcapp->tim->DIER &= ~TIM_DIER_CC1IE;
+ }
+}
+
+void capture2Cb(TIMCAPDriver *timcapp)
+{
+ if(TIM3CC2CaptureNumber == 0)
+ {
+ /* Get the Input Capture value */
+ TIM3CC2ReadValue1 = timcapp->tim->CCR[1];
+ TIM3CC2CaptureNumber = 1;
+ TIM3CC2UD = false;
+ }
+ else if(TIM3CC2CaptureNumber == 1)
+ {
+ uint32_t Capture;
+ /* Get the Input Capture value */
+ TIM3CC2ReadValue2 = timcapp->tim->CCR[1];
+ TIM3CC2UD = false;
+
+ /* Capture computation */
+ if (TIM3CC2ReadValue2 > TIM3CC2ReadValue1)
+ {
+ Capture = ((uint32_t)TIM3CC2ReadValue2 - (uint32_t)TIM3CC2ReadValue1);
+ }
+ else
+ {
+ Capture = (((uint32_t)TIM3CC2ReadValue2 + 0x10000) - (uint32_t)TIM3CC2ReadValue1);
+ }
+
+ /* Frequency computation */
+ freq2 = (timcapp->config->frequency / Capture);
+
+ TIM3CC2ReadValue1 = TIM3CC2ReadValue2;
+ TIM3CC2CaptureNumber = 0;
+
+ /* Disable CC2 interrupt */
+ timcapp->tim->DIER &= ~TIM_DIER_CC2IE;
+ }
+}
+
+TIMCAPConfig tc_conf = {
+ {TIMCAP_INPUT_ACTIVE_HIGH,
+ TIMCAP_INPUT_ACTIVE_HIGH,
+ TIMCAP_INPUT_DISABLED,
+ TIMCAP_INPUT_DISABLED},
+ 200000, /* TIM3 Runs at 36Mhz max. (1/200000)*65536 = 0.32s Max, 3.12Hz Min */
+ {capture1Cb, capture2Cb, NULL, NULL},
+ captureOverflowCb,
+ 0,
+ 0
+};
+
+THD_WORKING_AREA(waThreadTimcap, 256);
+static THD_FUNCTION(ThreadTimcap, arg)
+{
+ (void)arg;
+
+ while (TRUE)
+ {
+
+ reEnableInputCapture(&TIMCAPD3);
+ chThdSleepMilliseconds(200);
+ }
+
+ return;
+}
+
+/*
+ * Application entry point.
+ */
+int main(void) {
+
+ /*
+ * System initializations.
+ * - HAL initialization, this also initializes the configured device drivers
+ * and performs the board-specific initializations.
+ * - Kernel initialization, the main() function becomes a thread and the
+ * RTOS is active.
+ */
+ halInit();
+ chSysInit();
+
+ timcapStart(&TIMCAPD3, &tc_conf);
+
+ chThdCreateStatic(waThreadTimcap, sizeof(waThreadTimcap), NORMALPRIO, ThreadTimcap, NULL);
+
+ /*
+ * Normal main() thread activity, it resets the watchdog.
+ */
+ while (true) {
+ palToggleLine(LINE_LED4_BLUE);
+ chThdSleepMilliseconds(500);
+ }
+ return 0;
+}
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