Diff: frq_cuntr_full.h

Revision:

0:bfdc6ed58a06

Child:

1:102230f2879d

diff -r 000000000000 -r bfdc6ed58a06 frq_cuntr_full.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/frq_cuntr_full.h	Sat Nov 22 04:01:41 2014 +0000
@@ -0,0 +1,125 @@
+/*
+ * mbed Application program / Frequency Counter with GPS 1PPS Compensation
+ *      Frequency Counter Hardware relataed program
+ *
+ * Copyright (c) 2014 Kenji Arai / JH1PJL
+ *  http://www.page.sannet.ne.jp/kenjia/index.html
+ *  http://mbed.org/users/kenjiArai/
+ *      Additional functions and modification
+ *      started: October   18th, 2014
+ *      Revised: Nobember  22nd, 2014
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef        MBED_FRQ_CUNTR
+#define        MBED_FRQ_CUNTR
+
+#include "mbed.h"
+
+namespace Frequency_counter
+{
+    #define DEBUG           // use Communication with PC(UART)
+    #define IRQ_DRIVE
+    //#define BASE_EXTERNAL_CLOCK
+    
+    #if defined(BASE_EXTERNAL_CLOCK)
+    #define CNT_UPPER       (0xffffffff - 100)
+    #define CNT_LOWER       (0          + 100)
+    //#define CNT_UPPER       (30000000 + 1000000)
+    //#define CNT_LOWER       (30000000 - 1000000)
+    #else
+    #define CNT_UPPER       (0xffffffff - 100)
+    #define CNT_LOWER       (0          + 100)
+    //#define CNT_UPPER       (100000000 - 100000)
+    //#define CNT_LOWER       (100000000 + 100000)
+    #endif
+    
+    #if defined(BASE_EXTERNAL_CLOCK)
+    #define ONE_SECOND_COUNT    0xe4e1c0
+    #else
+    #define ONE_SECOND_COUNT    0x2faf080
+    #endif
+    
+    #define CNT_BF_SIZE     120
+    
+    //#if defined(IRQ_DRIVE)
+    // 1PPS data
+    extern uint32_t onepps_cnt[CNT_BF_SIZE];
+    extern uint32_t onepps_num;
+    extern uint64_t  onepps_cnt_avarage;
+    extern uint8_t  onepps_buf_full;
+    extern uint8_t  onepps_ready_flg;
+    // TIM2
+    extern uint8_t  tim2_ready_flg;
+    extern uint32_t tim2_cnt_data;
+    extern uint32_t tim2_old_cnt_data;
+    // TIM3+4
+    extern uint8_t  tim3p4_ready_flg;
+    extern uint32_t tim3p4_cnt_data;
+    extern uint32_t tim3p4_old_cnt_data;
+    
+    // TIM2 IC2 Interrupt control
+    void irq_ic2_TIM2(void);
+    // TIM3 IC2 Interrupt control (same signal connected to TIM4 IC1)
+    void irq_ic2_TIM3P4(void);
+
+    class FRQ_CUNTR
+    {
+    public:
+    
+        FRQ_CUNTR(PinName f_in);
+    
+        void initialize_Freq_counter(void);
+        
+        // Read TIM2 captured counter value
+        uint32_t read_ic2_counter_TIM2(void);
+        
+        // Check TIM2 IC2 status
+        uint32_t check_ic2_status_TIM2(void);
+    
+        // Read TIM3+4(as 32bit) captured counter value
+        uint32_t read_ic2_counter_TIM3P4(void);
+        
+        // Check TIM3 IC2 & TIM4 IC1 status
+        uint32_t check_ic2_status_TIM3P4(void);
+       
+        // Avarage measued data GPS 1PPS by 50MHz Internal Clock
+        void avarage_1pps(void);
+    
+        //  Frequency check for test purpose
+        uint32_t read_frequency_TIM2(float gate_time);
+        uint32_t read_frequency_TIM3P4(float gate_time);
+        
+        //  Clock output for test purpose
+        void port_mco1_mco2_set(uint8_t select);
+    
+    protected:
+        DigitalIn _pin;
+    
+        // Initialize TIM2
+        // Internal clock (50MHz) and IC2 for GPS 1pps signal measurement
+        void initialize_TIM2(void);
+        
+        // Initialize TIM3 and TIM4 as 32bit counter (TIM3(16bit) + TIM4(16bit))
+        //      TIM3 clock input is unkown freq.(measuring freq.) and TIM4 is slave counter
+        //      1sec gate signal connected both TIM3 IC2 and TIM4 IC1 
+        void initialize_TIM3P4(void);
+    
+    private:
+        #if defined(IRQ_DRIVE)
+        // 1PPS data
+        uint32_t onepps_cnt[CNT_BF_SIZE];
+        uint32_t onepps_num;
+        uint64_t  onepps_cnt_avarage;
+        uint8_t  onepps_buf_full;
+        uint8_t  onepps_ready_flg;
+        #endif
+    };
+}   // Frequency_counter
+
+#endif      // MBED_FRQ_CUNTR