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61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
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* Copyright (C) 2018 bzt (bztsrc@github)
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "uart.h"
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#include "mbox.h"
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void main()
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{
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// set up serial console
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uart_init();
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// get the board's unique serial number with a mailbox call
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mbox[0] = 8*4; // length of the message
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mbox[1] = MBOX_REQUEST; // this is a request message
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mbox[2] = MBOX_TAG_GETSERIAL; // get serial number command
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mbox[3] = 0; // no input arguments
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mbox[4] = 0;
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mbox[5] = 0; // clear output buffer
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mbox[6] = 0;
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mbox[7] = MBOX_TAG_LAST;
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// send the message to the GPU and receive answer
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if (mbox_call(MBOX_CH_PROP)) {
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uart_puts("My serial number is: ");
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uart_hex(mbox[6]);
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uart_hex(mbox[5]);
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uart_puts("\n");
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} else {
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uart_puts("Unable to query serial!\n");
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}
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// echo everything back
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while(1) {
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uart_send(uart_getc());
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}
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}
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