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Corey Hahn
2026-02-23 20:42:11 -07:00
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verilog/dv/la_test2/la_test2.c Normal file
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/*
* SPDX-FileCopyrightText: 2020 Efabless Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* SPDX-License-Identifier: Apache-2.0
*/
// This include is relative to $CARAVEL_PATH (see Makefile)
#include <defs.h>
#include <stub.c>
/*
MPRJ LA Test:
- Sets counter clk through LA[64]
- Sets counter rst through LA[65]
- Observes count value for five clk cycle through LA[31:0]
*/
int clk = 0;
int i;
void main()
{
/* Set up the housekeeping SPI to be connected internally so */
/* that external pin changes don't affect it. */
// reg_spimaster_config = 0xa002; // Enable, prescaler = 2,
reg_spi_enable = 1;
// connect to housekeeping SPI
// Connect the housekeeping SPI to the SPI master
// so that the CSB line is not left floating. This allows
// all of the GPIO pins to be used for user functions.
// All GPIO pins are configured to be output
// Used to flad the start/end of a test
reg_mprj_io_31 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_30 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_29 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_28 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_27 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_26 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_25 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_24 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_23 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_22 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_21 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_20 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_19 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_18 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_17 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_16 = GPIO_MODE_MGMT_STD_OUTPUT;
reg_mprj_io_15 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_14 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_13 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_12 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_11 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_10 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_9 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_8 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_7 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_5 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_4 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_3 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_2 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_1 = GPIO_MODE_USER_STD_OUTPUT;
reg_mprj_io_0 = GPIO_MODE_USER_STD_OUTPUT;
/* Apply configuration */
reg_mprj_xfer = 1;
while (reg_mprj_xfer == 1);
// Configure All LA probes as inputs to the cpu
reg_la0_oenb = reg_la0_iena = 0x00000000; // [31:0]
reg_la1_oenb = reg_la1_iena = 0x00000000; // [63:32]
reg_la2_oenb = reg_la2_iena = 0x00000000; // [95:64]
reg_la3_oenb = reg_la3_iena = 0x00000000; // [127:96]
// Flag start of the test
reg_mprj_datal = 0xAB600000;
// Configure LA[64] LA[65] as outputs from the cpu
reg_la2_oenb = reg_la2_iena = 0x00000003;
// Set clk & reset to one
reg_la2_data = 0x00000003;
// DELAY
for (i=0; i<5; i=i+1) {}
// Toggle clk & de-assert reset
for (i=0; i<11; i=i+1) {
clk = !clk;
reg_la2_data = 0x00000000 | clk;
}
// reg_mprj_datal = 0xAB610000;
while (1){
if (reg_la0_data_in >= 0x05) {
reg_mprj_datal = 0xAB610000;
break;
}
}
}