send work pitch should be : (15*(8+2)*4/19200)s

driver-avalon.h

@@ -55,8 +55,8 @@ struct avalon_info {
 #define AVALON_MINER_THREADS 1
 
 #define AVALON_IO_SPEED 19200 // 115200
-#define AVALON_SEND_WORK_PITCH (40*1000*1000) /* 40ms */
-#define AVALON_RESET_PITCH     (80*1000*1000) /* 80ms */
+#define AVALON_SEND_WORK_PITCH (32*1000*1000)
+#define AVALON_RESET_PITCH     (80*1000*1000)
 
 #define AVALON_GET_WORK_COUNT 3 // 24
 #define AVALON_DEFAULT_FAN_PWM 0x98