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SDRAM
rt-thread SDRAM测试
发布于 2022-07-29 16:12:56 浏览：771
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在rt-thread4.1.1版本中测试SDRAM，SDRAM单片16bit，两片合并为32bit，在进行读写测试时，读出的数据（偏移地址是8的倍数时）总是0，请问可能是什么原因？ ``` [D/drv.sdram] [0] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [1] SEMC SDRAM ReadBuf 32 bit Data: 1 [D/drv.sdram] [2] SEMC SDRAM ReadBuf 32 bit Data: 2 [D/drv.sdram] [3] SEMC SDRAM ReadBuf 32 bit Data: 3 [D/drv.sdram] [4] SEMC SDRAM ReadBuf 32 bit Data: 4 [D/drv.sdram] [5] SEMC SDRAM ReadBuf 32 bit Data: 5 [D/drv.sdram] [6] SEMC SDRAM ReadBuf 32 bit Data: 6 [D/drv.sdram] [7] SEMC SDRAM ReadBuf 32 bit Data: 7 [D/drv.sdram] [8] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [9] SEMC SDRAM ReadBuf 32 bit Data: 9 [D/drv.sdram] [10] SEMC SDRAM ReadBuf 32 bit Data: 10 [D/drv.sdram] [11] SEMC SDRAM ReadBuf 32 bit Data: 11 [D/drv.sdram] [12] SEMC SDRAM ReadBuf 32 bit Data: 12 [D/drv.sdram] [13] SEMC SDRAM ReadBuf 32 bit Data: 13 [D/drv.sdram] [14] SEMC SDRAM ReadBuf 32 bit Data: 14 [D/drv.sdram] [15] SEMC SDRAM ReadBuf 32 bit Data: 15 [D/drv.sdram] [16] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [17] SEMC SDRAM ReadBuf 32 bit Data: 17 [D/drv.sdram] [18] SEMC SDRAM ReadBuf 32 bit Data: 18 [D/drv.sdram] [19] SEMC SDRAM ReadBuf 32 bit Data: 19 [D/drv.sdram] [20] SEMC SDRAM ReadBuf 32 bit Data: 20 [D/drv.sdram] [21] SEMC SDRAM ReadBuf 32 bit Data: 21 [D/drv.sdram] [22] SEMC SDRAM ReadBuf 32 bit Data: 22 [D/drv.sdram] [23] SEMC SDRAM ReadBuf 32 bit Data: 23 [D/drv.sdram] [24] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [25] SEMC SDRAM ReadBuf 32 bit Data: 25 [D/drv.sdram] [26] SEMC SDRAM ReadBuf 32 bit Data: 26 [D/drv.sdram] [27] SEMC SDRAM ReadBuf 32 bit Data: 27 [D/drv.sdram] [28] SEMC SDRAM ReadBuf 32 bit Data: 28 [D/drv.sdram] [29] SEMC SDRAM ReadBuf 32 bit Data: 29 [D/drv.sdram] [30] SEMC SDRAM ReadBuf 32 bit Data: 30 [D/drv.sdram] [31] SEMC SDRAM ReadBuf 32 bit Data: 31 [D/drv.sdram] [32] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [33] SEMC SDRAM ReadBuf 32 bit Data: 33 [D/drv.sdram] [34] SEMC SDRAM ReadBuf 32 bit Data: 34 [D/drv.sdram] [35] SEMC SDRAM ReadBuf 32 bit Data: 35 [D/drv.sdram] [36] SEMC SDRAM ReadBuf 32 bit Data: 36 [D/drv.sdram] [37] SEMC SDRAM ReadBuf 32 bit Data: 37 [D/drv.sdram] [38] SEMC SDRAM ReadBuf 32 bit Data: 38 [D/drv.sdram] [39] SEMC SDRAM ReadBuf 32 bit Data: 39 [D/drv.sdram] [40] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [41] SEMC SDRAM ReadBuf 32 bit Data: 41 [D/drv.sdram] [42] SEMC SDRAM ReadBuf 32 bit Data: 42 [D/drv.sdram] [43] SEMC SDRAM ReadBuf 32 bit Data: 43 [D/drv.sdram] [44] SEMC SDRAM ReadBuf 32 bit Data: 44 [D/drv.sdram] [45] SEMC SDRAM ReadBuf 32 bit Data: 45 [D/drv.sdram] [46] SEMC SDRAM ReadBuf 32 bit Data: 46 [D/drv.sdram] [47] SEMC SDRAM ReadBuf 32 bit Data: 47 [D/drv.sdram] [48] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [49] SEMC SDRAM ReadBuf 32 bit Data: 49 [D/drv.sdram] [50] SEMC SDRAM ReadBuf 32 bit Data: 50 [D/drv.sdram] [51] SEMC SDRAM ReadBuf 32 bit Data: 51 [D/drv.sdram] [52] SEMC SDRAM ReadBuf 32 bit Data: 52 [D/drv.sdram] [53] SEMC SDRAM ReadBuf 32 bit Data: 53 [D/drv.sdram] [54] SEMC SDRAM ReadBuf 32 bit Data: 54 [D/drv.sdram] [55] SEMC SDRAM ReadBuf 32 bit Data: 55 [D/drv.sdram] [56] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [57] SEMC SDRAM ReadBuf 32 bit Data: 57 [D/drv.sdram] [58] SEMC SDRAM ReadBuf 32 bit Data: 58 [D/drv.sdram] [59] SEMC SDRAM ReadBuf 32 bit Data: 59 [D/drv.sdram] [60] SEMC SDRAM ReadBuf 32 bit Data: 60 [D/drv.sdram] [61] SEMC SDRAM ReadBuf 32 bit Data: 61 [D/drv.sdram] [62] SEMC SDRAM ReadBuf 32 bit Data: 62 [D/drv.sdram] [63] SEMC SDRAM ReadBuf 32 bit Data: 63 [D/drv.sdram] [64] SEMC SDRAM ReadBuf 32 bit Data: 0 [D/drv.sdram] [65] SEMC SDRAM ReadBuf 32 bit Data: 65 [D/drv.sdram] [66] SEMC SDRAM ReadBuf 32 bit Data: 66 [D/drv.sdram] [67] SEMC SDRAM ReadBuf 32 bit Data: 67 [D/drv.sdram] [68] SEMC SDRAM ReadBuf 32 bit Data: 68 [D/drv.sdram] [69] SEMC SDRAM ReadBuf 32 bit Data: 69 [D/drv.sdram] [70] SEMC SDRAM ReadBuf 32 bit Data: 70 [D/drv.sdram] [71] SEMC SDRAM ReadBuf 32 bit Data: 71 [D/drv.sdram] [72] SEMC SDRAM ReadBuf 32 bit Data: 0 ```
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crystal266
2022-07-30
嵌入式
裸机的 SDRAM 能够跑通吗？
linuxer
2022-08-02
这家伙很懒，什么也没写！
裸机能跑通，能通过内存校验
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