Diff: main.cpp

Revision:

0:a5f82a6b0d16

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 24 19:13:08 2017 +0000
@@ -0,0 +1,98 @@
+#include "mbed.h"
+#include "Stm32F1xxAlternative.hpp"
+
+
+DigitalOut myled(LED1);
+
+// Declare the legs of the microcontroller to work with the I2C software bus
+#define _GPIO_Pin_9 (1<<9) // It is the 9 leg any port of the microcontroller
+#define _GPIO_Pin_8 (1<<8) // It is the 8 leg any port of the microcontroller
+// This is the class for working with the I2C software bus
+// By default, the I2C frequency is 100 kHz
+// In the example, the legs of the PC_9 microcontroller are used for SCL 
+// and PC_8 for SDA (SCL port, SDA, port, SCL pin, SDA pin)
+SoftwareI2C _i2c(GPIOC, GPIOC, _GPIO_Pin_9, _GPIO_Pin_8);
+
+
+// Class for watchdog timer
+#if (1)
+// You can initialize as follows:
+WatchdogTimer Watchdog(10.0);
+#else
+// Or you can initialize this way:
+WatchdogTimer Watchdog();
+#endif
+
+// So you can find out the status of the watchdog timer
+void WatchdogStatus(void) {
+    switch (Watchdog.getStatus()) {
+        case WatchdogTimer::RESET:       // IWDG not yet initialized or disabled
+            printf("IWDG not yet initialized or disabled\r\n");
+            break;
+        case WatchdogTimer::READY:       // IWDG initialized and ready for use   
+            printf("IIWDG initialized and ready for use\r\n");
+            break;
+        case WatchdogTimer::BUSY:        // IWDG internal process is ongoing 
+            printf("IWDG internal process is ongoing\r\n");
+            break;
+        case WatchdogTimer::TIMEOUT:     // IWDG timeout state             
+            printf("IWDG timeout state\r\n");
+            break;
+        case WatchdogTimer::ERROR:       // IWDG error state          
+            printf("IWDG error state\r\n");
+            break;
+        default: 
+            printf("Unknown state\r\n");
+            break;
+    }
+}
+
+
+
+
+int main() {
+    #if (0)
+    // You can pre-initialize an alternative time delay
+    initializeTimeDelays();
+    // Otherwise, initialization will be called automatically 
+    // the first time you call the function delay_ms or delay_us
+    #endif
+    #if (0)
+    // You can re-initialize the watchdog
+    // The maximum time is 32 seconds
+    Watchdog.setResponseTime_s(10);
+    //Watchdog.setResponseTime_us(10000000);
+    //Watchdog.setResponseTime_ms(10000);
+    #endif
+    // We get the state of the watchdog timer
+    WatchdogStatus();
+    // Run watchdog
+    Watchdog.start();
+    
+    
+    #if (1)
+    // Example of using the software I2C
+    uint8_t _addr = 0x4E;
+    uint8_t _reg = 0x20;
+    uint8_t _data = 0x55;
+    _i2c.start(); // Signal start
+    _i2c.write(_addr << 1); // Transfer the address of the device
+    _i2c.write(_reg); // Transfer the number of the register
+    _i2c.write(_data); // Write the data in the register
+    _i2c.stop(); // 
+    // You can also use this function
+    // void write(uint8_t address, uint8_t* data, uint8_t length);
+    #endif
+    
+    
+    while(1) {
+        myled = !myled;
+        // This is an alternative delay for milliseconds
+        // For microseconds, there is a function delay_us
+        delay_ms(1000);
+        // Update Watchdog
+        // If this is not done, 
+        // the watchdog timer will automatically reset the microcontroller
+        Watchdog.refresh();
+    }
+}