add degrC calculation

STM32/Tcalc/hardware.h

@@ -0,0 +1,61 @@
+/*
+ *                                                                                                  geany_encoding=koi8-r
+ * hardware.h
+ *
+ * Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
+#include "stm32f0.h"
+
+#define LED0_port   GPIOB
+#define LED0_pin    (1<<3)
+
+#ifndef USARTNUM
+#define USARTNUM 2
+#endif
+
+#define CONCAT(a,b)     a ## b
+#define STR_HELPER(s)   #s
+#define STR(s) STR_HELPER(s)
+
+#define FORMUSART(X)   CONCAT(USART, X)
+#define USARTX  FORMUSART(USARTNUM)
+
+#ifndef I2CPINS
+#define I2CPINS A9A10
+#endif
+
+#ifndef LED1_port
+#define LED1_port   LED0_port
+#endif
+#ifndef LED1_pin
+#define LED1_pin    LED0_pin
+#endif
+#define LED_blink(x) pin_toggle(x ## _port, x ## _pin)
+
+// set active channel number
+#define MUL_ADDRESS(x) do{GPIOA->BSRR = (0x1F8 << 16) | (x << 3);}while(0)
+
+typedef enum{
+    LOW_SPEED,
+    HIGH_SPEED
+} I2C_SPEED;
+
+void gpio_setup(void);
+void i2c_setup(I2C_SPEED speed);