add I2C for F303, fix bug in USB (some variables wasn't volatile)

2026-02-28 11:54:30 +03:00 · 2023-01-22 21:55:49 +03:00
parent c6e3acc460
commit b415b94b55
35 changed files with 2605 additions and 27 deletions
--- a/F3:F303/I2C_scan/main.c
+++ b/F3:F303/I2C_scan/main.c
@@ -0,0 +1,69 @@
+/*
+ * This file is part of the i2cscan project.
+ * Copyright 2023 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 "i2c.h"
+#include "hardware.h"
+#include "proto.h"
+#include "strfunc.h"
+#include "usb.h"
+
+#define MAXSTRLEN    RBINSZ
+
+volatile uint32_t Tms = 0;
+
+void sys_tick_handler(void){
+    ++Tms;
+}
+
+int main(void){
+    char inbuff[MAXSTRLEN+1];
+    if(StartHSE()){
+        SysTick_Config((uint32_t)72000); // 1ms
+    }else{
+        StartHSI();
+        SysTick_Config((uint32_t)48000); // 1ms
+    }
+    hw_setup();
+    USB_setup();
+    uint32_t ctr = Tms;
+    while(1){
+        if(Tms - ctr > 499){
+            ctr = Tms;
+            pin_toggle(GPIOB, 1 << 1 | 1 << 0); // toggle LED @ PB0
+            //USND("HALO\n");
+        }
+        USB_proc();
+        int l = USB_receivestr(inbuff, MAXSTRLEN);
+        if(l < 0) USB_sendstr("ERROR: USB buffer overflow or string was too long\n");
+        else if(l){
+            const char *ans = parse_cmd(inbuff);
+            if(ans) USB_sendstr(ans);
+        }
+        if(I2C_scan_mode){
+            uint8_t addr;
+            int ok = i2c_scan_next_addr(&addr);
+            if(addr == I2C_ADDREND) USND("Scan ends\n");
+            else if(ok){
+                USND(uhex2str(addr));
+                USND(" ("); USND(u2str(addr));
+                USND(") - found device\n");
+            }
+        }
+        i2c_have_DMA_Rx(); // check if there's DMA Rx complete
+    }
+}