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Timer_one_shot.md

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+This is a specific setting of input and output capture mode. The counter starts in response to a stimulus and then generates a pulse of specific length after a specific delay.
+```
+   Delay = CCRy / (TIMx_CLK / (PSC + 1))
+   Pulse length = (ARR - CCRy) / (TIMx_CLK / (PSC + 1))
+```
+###To configure:
+1. confgure input pin and mode
+  * select TIxFPx trigger to be used
+    * in CCMRx reg - write CCxS bits
+  * select polarity of input (pos, neg, both)
+    * in CCER reg - write CCxP and CCxNP bits
+  * configure TIxFPx trigger to slave mode
+    * in SMCR reg - write TS bits	
+  * select trigger mode to slave mode
+    * in SMCR reg - write SMS bits
+2. configure output pin and mode
+  * select output polarity
+		- in CCER reg - write CCyP bit
+  * select output compare mode
+    * in CCMRy reg - write OCyM bits
+    * PWM1 or PWM2 mode
+  * set delay value
+    * in CCRy reg - write delay value
+  * set autoreload to have desired pulse
+  * ```pulse = TIMy_ARR - TIMy_CCRy```
+3. select one-pulse mode if only need one pulse (else reset bit)
+  * in CR1 reg - set OPM bit