Revision 0:e367ec7e677f, committed 2019-10-15

Comitter:

jsoh91

Date:

Tue Oct 15 03:41:29 2019 +0000

Commit message:

fast CAN timer;

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 15 03:41:29 2019 +0000
@@ -0,0 +1,113 @@
+#if !FEATURE_LWIP
+#error [NOT_SUPPORTED] LWIP not supported for this target
+#endif
+
+
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+#define IP          "10.12.3.26"
+#define NETMASK     "255.255.255.0"
+#define GATEWAY     "192.168.137.1"
+
+#define serv_IP     "10.12.3.25"
+
+#define TMR3_COUNT  54000000      // loop 5k
+
+#include <cstdlib>
+#include <iostream>
+
+using namespace std;
+
+float calc_time = 0.0f;
+    
+Timer t;
+
+extern "C" void TIM3_IRQHandler(void)
+{
+    if ( TIM3->SR & TIM_SR_UIF ) {
+
+
+
+    }
+    TIM3->SR = 0x0;
+}
+
+void Init_TMR3()
+{
+
+
+    RCC->APB1ENR |= RCC_APB1ENR_TIM3EN;                         // enable TIM3 clock
+
+    //ISR Setup
+
+    NVIC_EnableIRQ(TIM3_IRQn);                         //Enable TIM3 IRQ
+
+    TIM3->DIER |= TIM_DIER_UIE;                                 // enable update interrupt
+    TIM3->CR1 = 0x40;                                           // CMS = 10, interrupt only when counting up // Center-aligned mode
+    TIM3->CR1 |= TIM_CR1_UDIS;
+    TIM3->CR1 |= TIM_CR1_ARPE;                                  // autoreload on,
+    TIM3->RCR |= 0x001;                                         // update event once per up/down count of TIM3
+    TIM3->EGR |= TIM_EGR_UG;
+
+    TIM3->PSC = 0x4;                                            // no prescaler, timer counts up in sync with the peripheral clock
+    TIM3->ARR = TMR3_COUNT;                                          // set auto reload, 5 khz
+    TIM3->CCER |= ~(TIM_CCER_CC1NP);                            // Interupt when low side is on.
+    TIM3->CR1 |= TIM_CR1_CEN;                                   // enable TIM4
+}
+
+
+int main()
+{
+    Init_TMR3();
+    TIM3->CR1 ^= TIM_CR1_UDIS;
+    NVIC_SetPriority(TIM3_IRQn, 2);
+
+    t.reset();
+    t.start();
+//
+//    wait(1.0);
+//    printf("Basic HTTP client example\n");
+//
+//    EthernetInterface eth;
+//    eth.set_network(IP, NETMASK, GATEWAY);
+//    eth.connect();
+////
+////    int eth_state = eth.connect();
+////
+//    printf("The target IP address is '%s'\n", eth.get_ip_address());
+//
+//    TCPSocket clt_sock;
+//    clt_sock.open(&eth);
+//    clt_sock.connect(serv_IP,80);
+//
+//    // UDPSocket clt_sock;
+////        clt_sock.open(&eth);
+//////    clt_sock.connect("192.168.137.25",80);
+//
+////    SocketAddress serv_IP;
+//
+//    char tbuffer[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
+//    char rbuffer[128];
+
+    while (true) {
+
+        cout << "t : " << calc_time << endl;
+        wait(0.2f);
+
+
+
+//        t.reset();
+//        t.start();
+//        clt_sock.send(tbuffer, strlen(tbuffer));
+//        t.stop();
+//        printf("send time: %f\n",t.read()*1000.0f);
+//
+//        t.reset();
+//        t.start();
+//        clt_sock.recv(rbuffer,50);
+//        t.stop();
+//        printf("recv time: %f\n",t.read()*1000.0f);
+
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Tue Oct 15 03:41:29 2019 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#c9e63f14085f5751ff5ead79a7c0382d50a813a2