Add canUART for STM32F103

2026-02-28 11:54:30 +03:00 · 2022-12-05 11:50:17 +03:00
parent d3ffc05128
commit cfff079dba
21 changed files with 1795 additions and 0 deletions
--- a/F1:F103/canUART/main.c
+++ b/F1:F103/canUART/main.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the canuart project.
+ * Copyright 2022 Edward V. Emelianov <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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "can.h"
+#include "hardware.h"
+#include "proto.h"
+#include "usart.h"
+
+volatile uint32_t Tms = 0;
+
+/* Called when systick fires */
+void sys_tick_handler(void){
+    ++Tms;
+}
+
+int main(void){
+    uint32_t lastT = 0;
+#ifdef BLUEPILL
+    uint32_t bplastT = 0;
+#endif
+    CAN_message *can_mesg;
+    StartHSE();
+    SysTick_Config(72000);
+    gpio_setup();
+    usart_setup();
+    CAN_setup(100);
+    RCC->CSR |= RCC_CSR_RMVF; // remove reset flags
+#ifndef EBUG
+    iwdg_setup();
+#endif
+
+    while (1){
+        IWDG->KR = IWDG_REFRESH; // refresh watchdog
+        if(lastT && (Tms - lastT > 199)){
+            LED_off(LED0);
+            lastT = 0;
+        }
+#ifdef BLUEPILL
+        if(Tms - bplastT > 499){
+            pin_toggle(LEDB_port, LEDB_pin);
+            bplastT = Tms;
+        }
+#endif
+        can_proc();
+        CAN_status st = CAN_get_status();
+        if(st == CAN_FIFO_OVERRUN){
+            usart_send("CAN bus fifo overrun occured!\n");
+        }else if(st == CAN_ERR){
+            usart_send("Some CAN error occured\n");
+        }
+        while((can_mesg = CAN_messagebuf_pop())){
+            if(can_mesg && isgood(can_mesg->ID)){
+                LED_on(LED0);
+                lastT = Tms;
+                if(!lastT) lastT = 1;
+                if(ShowMsgs){ // new data in buff
+                    IWDG->KR = IWDG_REFRESH;
+                    uint8_t len = can_mesg->length;
+                    printu(Tms);
+                    usart_send(" #");
+                    printuhex(can_mesg->ID);
+                    for(uint8_t ctr = 0; ctr < len; ++ctr){
+                        usart_putchar(' ');
+                        printuhex(can_mesg->data[ctr]);
+                    }
+                    usart_putchar('\n');
+                }
+            }
+        }
+        char *str;
+        int g = usart_getline(&str);
+        if(g < 0) usart_send("USART buffer overflow!\n");
+        else if(g > 0) cmd_parser(str);
+        usart_transmit();
+    }
+    return 0;
+}
+