mirror of https://github.com/efabless/caravel.git
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
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/*
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* SPDX-FileCopyrightText: 2020 Efabless Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <defs.h>
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#include <stub.c>
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// --------------------------------------------------------
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void wait_for_char(char *c){
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while (uart_rxempty_read() == 1);
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if (reg_uart_data == *c){
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reg_debug_1 = 0x1B; // recieved the correct character
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}else{
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reg_debug_1 = 0x1E; // timeout didn't recieve the character
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}
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}
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void main(){
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int j;
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reg_wb_enable =1; // for enable writing to reg_debug_1 and reg_debug_2
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reg_debug_1 = 0x0;
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reg_debug_2 = 0x0;
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reg_mprj_io_6 = GPIO_MODE_MGMT_STD_OUTPUT;
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reg_mprj_io_5 = GPIO_MODE_MGMT_STD_INPUT_NOPULL;
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// Now, apply the configuration
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reg_mprj_xfer = 1;
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while (reg_mprj_xfer == 1);
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reg_uart_enable = 1;
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reg_debug_1 = 0xAA; // start sending B
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wait_for_char("B");
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reg_debug_1 = 0xBB; // start sending M
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wait_for_char("M");
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reg_debug_1 = 0xCC; // start sending A
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wait_for_char("A");
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}
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