超过30个字节乱码。但是写入lora缓冲区是没问题的。问题应该找别的地方

drv_periph/radio.lua

@@ -30,13 +30,13 @@ sys.taskInit(function()
     sx126x_driver.RadioRx(0)
     while true do
         -- RadioStandby()
-        -- -- sx126x_driver.sentString("hello,My_name_is_XuXinyi\n")
+        local string111  =  "1234567891011121314151617181920212223242526272830313233343536!\n"
+        sx126x_driver.sentString(string111)
         -- log.info("Radio", "测试接收数据中。。。")
         -- sx126x_driver.RadioRx(0)
         sx126x_driver.SX126xWakeup()
-        sys.wait(4000)
+        sys.wait(1000)
         -- sx126x_driver.RadioRx(0)
     end
 end)
 
-

drv_periph/sx126x_driver.lua

@@ -78,7 +78,7 @@ function gpio4IntFnc(msg)
     log.info("testGpioSingle.gpio4IntFnc",msg,getGpio4Fnc())
     --上升沿中断
     if msg==cpu.INT_GPIO_POSEDGE then
-        sys.publish("LORA_CALL_BACK")
+        -- sys.publish("LORA_CALL_BACK")
         -- log.info("我是中断")
     --下降沿中断
     else
@@ -413,15 +413,43 @@ function SX126xWriteBuffer(offset, buffer,size)
     -- log.info("SX126xWriteBuffer",offset,buffer,size)
     local sentdata = offset .. buffer
     Drv_spi.drv_spi_read_write_byte(sx126x_reg.RadioCommands.RADIO_WRITE_BUFFER,0)
-    Drv_spi.drv_spi_read_write_byte(sentdata,10)
+    Drv_spi.drv_spi_read_write_byte(sentdata,size)
 
 end
 
-function SX126xSetPayload (payload,size)
-    -- log.info("SX126xSetPayload",payload,size)
-    SX126xWriteBuffer( "00", payload, size );
+function SX126xSetPayload(payload,size)
+    -- 每个缓冲区的大小：10字节 = 20个十六进制字符
+    local bytesPerBuffer = 10
+    local charsPerBuffer = bytesPerBuffer * 2  -- 20个字符
+    
+    -- 起始地址（十六进制）
+    local address = 0x00
+    local totalLength = #payload
+
+    local readBuf = ""
+    
+    -- 循环分割 payload 并写入
+    for i = 1, totalLength, charsPerBuffer do
+        -- 提取当前段的十六进制字符串（最多20个字符）
+        local segment = string.sub(payload, i, i + charsPerBuffer - 1)
+        -- 计算当前段的实际字节数（字符数 / 2）
+        local segmentBytes = #segment / 2
+        
+        -- 将地址转换为两位十六进制字符串（带前导零）
+        local addrHex = string.format("%02X", address)
+        
+        -- 调用写入缓冲区函数
+        SX126xWriteBuffer(addrHex, segment, segmentBytes)
+        readBuf = SX126xReadBuffer(addrHex,segmentBytes)
+        local hexStr = stringToHex(readBuf)
+        -- 地址递增（每次增加10字节）
+        address = address + bytesPerBuffer
+        log.info("SX126xWriteBuffer", "写入地址：", address,segment)
+        log.info("SX126xWriteBuffer", "读出地址：", address,hexStr)
+    end
 end
 
+
 function SX126xSetTx(timeout) 
     SX126xWriteCommand( sx126x_reg.RadioCommands.RADIO_SET_TX, {timeout});
 end
@@ -468,9 +496,9 @@ function sentString(strData)
     RadioSend(hexStr,string.format("%02X", #hexStr/2),"00") 
         --     local original = "Hello, Lua!\n"
         -- local hexStr = stringToHex(original)
-        log.info("test:",hexStr)  -- 输出: 48656c6c6f2c204c756121
-        log.info("testlen:",#hexStr)
-        log.info("testlen2:",string.format("%02X", #hexStr/2))
+        -- log.info("test:",hexStr)  -- 输出: 48656c6c6f2c204c756121
+        -- log.info("testlen:",#hexStr)
+        -- log.info("testlen2:",string.format("%02X", #hexStr/2))
         -- RadioSend(hexStr,string.format("%02X", #hexStr/2),"00") 
 end
 
@@ -546,13 +574,14 @@ function SX126xReadBuffer(offset,size)
         command = command .. "00"
     end
     local ret = Drv_spi.drv_spi_read_write_byte(command,size)
-    log.info("SX126xReadBuffer",ret)
+    -- log.info("SX126xReadBuffer",ret)
     -- 测试示例
     -- local hex_str = "617368696E696E67"  -- "ashining"的十六进制表示
     local original_str = hex_to_string(ret)
     
     -- print("转换后的字符串: " .. original_str)  -- 输出: ashining
-    log.info("原始字符串: " .. original_str)
+    -- log.info("原始字符串: " .. original_str)
+    return original_str
 end
 
 
@@ -578,8 +607,8 @@ sys.subscribe("LORA_CALL_BACK", function()
     -- end
     log.info("payloadLength",num1)
     --测试读取数据。
-    SX126xReadBuffer("00",8)
-    SX126xReadBuffer("09",8)
+    SX126xReadBuffer("00",num1)
+    -- SX126xReadBuffer("09",8)
 end)
 
 -- sys.taskInit(function ()
@@ -608,3 +637,5 @@ end)
 --     spi.close(spi.SPI_1)
 -- end)
 
+
+