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Re: Hi-tech PICC 建立查表 是否有 page 的限制?
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資深會員
 
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發表於: 2009/6/15 17:04
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Re: Hi-tech PICC 建立查表 是否有 page 的限制?
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資深會員
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我用 hitech C pro (Lite )v9.65 PIC 690 測試
總共使用 3個 const char 陣列 只要是 總數 >= 400 就死當. 看手冊也沒提到總共可用多少, 有人用過嗎? ========================================================== HI-TECH C Tools for thePIC10/12/16 MCU Family manual P.94 3.3.11.2 Data Pointers • An 8-bit pointer capable of accessing common memory and two consecutive banks, e.g. banks 0 and 1, or banks 7 and 8; – Address is an offset into the lower bank of the bank pair, e.g. bank 0 (extending into bank 1) or bank 7 (extending into bank 8) • A 16-bit pointer capable of accessing the entire data memory space; • An 8-bit pointer capable of accessing up to 256 bytes of program space data; – Address is an index into a lookup table; • A 16-bit pointer capable of accessing up to 64 kbytes of program space data; – Address is an offset into psect strings; • A 16-bit pointer capable of accessing the entire data space memory and up to 64 kbytes of program space data; – The most significant bit indicates the memory space of the target: 1 indicates an address of an object in the data space; 0 indicates the address of an object in the program space;
發表於: 2009/6/12 11:29
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Re: Hi-tech PICC 建立查表 是否有 page 的限制?
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資深會員
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將讀取陣列資料方法自 index 改成 pointer 後, 目前兩個 array table, 似乎都正常.
參考 1. hi-tech PICC Workshop p73 p74 2. 8051單晶片C 語言設計實務 3-37~3-45
發表於: 2009/6/7 13:59
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Hi-tech PICC 建立查表 是否有 page 的限制?
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資深會員
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我用16F914 及 picc pro 9.65 製作 NTC 溫度計,
用adc 讀取電壓值在利用查表法取得正確溫度, 只建立一組溫度資料時, lcd 顯示溫度一切正常 // 第一組 const unsigned char Thermo_Table[220] = { 省略 }; // 第二組 const unsigned char Thermo_Hi_Table[220] = { 省略 }; 可是我複製第一組, 建立第二組資料時, 編譯燒錄程式都 ok ! 執行程式 就死當! 把第二組資料刪除後, 程式又正常.(兩組資料目前是一樣的,沒理由會不工作) PICC Table 建立是否仍有 1 page (256 bytes) 限制, 是否要指定 ROM 的特定位址分別成 2 page 建立兩個Table才可以? 要如何指定? 我想請問有人有類似經驗嗎?
發表於: 2009/6/5 19:00
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