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上传时间: 2014-04-29
详细说明： 讲了F2812的一个GPIO的例子 // FILE: Example_281xGpio.c // // TITLE: DSP281x GPIO Loopback Test // // // This program requires the DSP281x V1.00 header files. // As supplied, this project is configured for "boot to H0" operation. // // To work properly this test requires hardware configuration described // below. // // In this test, 8 bits of a GPIO Port are configured as outputs // and 8 bits of the same port are configured as inputs. The pins // configured as outputs need t o be externally looped back to the // pins configured as inputs. The output data is read back on the // input pins. These tests are repeated for various qualifier // values and for GPIO ports A, B and F. // // Similar tests could be written for GPIO ports D, E and G. // Tests for ports A, D and F are called by separate functions // An external loopback has to be established before a testcase for // a given port is executed. // Refer to the .ebss space for global variables for test status // If PASS_flag = 0xDOBE then all tests have passed. // If PASS_flag = 0xDEAD then some tests have failed. // Tests are self validating. If a test passes, Test_status array // will have Test code 0x00xx. If this array has 0xDEAD, the test // has failed. ...展开收缩
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