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https://github.com/Telecominfraproject/OpenCellular.git
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3afd683d68
This patch adds tests for i2c_read8/16/32 and i2c_write8/16/32. BUG=chromium:653183 BRANCH=none TEST=make buildall. Run cts.py -m i2c for 100kHz with 10k ohms pull-up registers on SCL and SDA. TH=stm32l476g-eval DUT=nucleo-f072rb. Change-Id: I8121b1c5dc7542da45141543e35036ef41364c38 Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/393331 Reviewed-by: Randall Spangler <rspangler@chromium.org>
168 lines
3.1 KiB
C
168 lines
3.1 KiB
C
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include <string.h>
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#include "common.h"
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#include "cts_common.h"
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#include "cts_i2c.h"
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#include "dut_common.h"
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#include "i2c.h"
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#include "registers.h"
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#include "timer.h"
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#include "uart.h"
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#include "watchdog.h"
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static uint8_t inbox[I2C_MAX_HOST_PACKET_SIZE + 2];
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static char data_received;
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void i2c_data_received(int port, uint8_t *buf, int len)
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{
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memcpy(inbox, buf, len);
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data_received = 1;
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}
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/* CTS I2C protocol implementation */
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int i2c_set_response(int port, uint8_t *buf, int len)
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{
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switch (buf[0]) {
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case READ_8_OFFSET:
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buf[0] = READ_8_DATA;
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return 1;
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case READ_16_OFFSET:
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buf[0] = READ_16_DATA & 0xFF;
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buf[1] = (READ_16_DATA >> 8) & 0xFF;
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return 2;
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case READ_32_OFFSET:
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buf[0] = READ_32_DATA & 0xFF;
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buf[1] = (READ_32_DATA >> 8) & 0xFF;
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buf[2] = (READ_32_DATA >> 16) & 0xFF;
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buf[3] = (READ_32_DATA >> 24) & 0xFF;
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return 4;
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default:
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return 0;
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}
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}
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static int wait_for_in_flag(uint32_t timeout_ms)
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{
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uint64_t start_time, end_time;
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start_time = get_time().val;
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end_time = start_time + timeout_ms * 1000;
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while (get_time().val < end_time) {
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if (data_received)
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return 0;
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msleep(5);
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watchdog_reload();
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}
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return 1;
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}
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static void clear_inbox(void)
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{
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memset(inbox, 0, sizeof(inbox));
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data_received = 0;
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}
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enum cts_rc write8_test(void)
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{
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int in;
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if (wait_for_in_flag(100))
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return CTS_RC_TIMEOUT;
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if (inbox[0] != WRITE_8_OFFSET)
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return CTS_RC_FAILURE;
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in = inbox[1];
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if (in != WRITE_8_DATA)
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return CTS_RC_FAILURE;
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return CTS_RC_SUCCESS;
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}
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enum cts_rc write16_test(void)
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{
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int in;
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if (wait_for_in_flag(100))
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return CTS_RC_TIMEOUT;
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if (inbox[0] != WRITE_16_OFFSET)
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return CTS_RC_FAILURE;
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in = inbox[2] << 8 | inbox[1] << 0;
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if (in != WRITE_16_DATA)
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return CTS_RC_FAILURE;
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return CTS_RC_SUCCESS;
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}
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enum cts_rc write32_test(void)
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{
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int in;
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if (wait_for_in_flag(100))
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return CTS_RC_TIMEOUT;
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if (inbox[0] != WRITE_32_OFFSET)
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return CTS_RC_FAILURE;
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in = inbox[4] << 24 | inbox[3] << 16 | inbox[2] << 8 | inbox[1];
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if (in != WRITE_32_DATA)
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return CTS_RC_FAILURE;
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return CTS_RC_SUCCESS;
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}
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enum cts_rc read8_test(void)
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{
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if (wait_for_in_flag(100))
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return CTS_RC_TIMEOUT;
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if (inbox[0] != READ_8_OFFSET)
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return CTS_RC_FAILURE;
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return CTS_RC_SUCCESS;
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}
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enum cts_rc read16_test(void)
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{
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if (wait_for_in_flag(100))
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return CTS_RC_TIMEOUT;
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if (inbox[0] != READ_16_OFFSET)
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return CTS_RC_FAILURE;
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return CTS_RC_SUCCESS;
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}
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enum cts_rc read32_test(void)
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{
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if (wait_for_in_flag(100))
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return CTS_RC_TIMEOUT;
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if (inbox[0] != READ_32_OFFSET)
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return CTS_RC_FAILURE;
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return CTS_RC_SUCCESS;
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}
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#include "cts_testlist.h"
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void cts_task(void)
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{
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enum cts_rc result;
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int i;
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cflush();
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for (i = 0; i < CTS_TEST_ID_COUNT; i++) {
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clear_inbox();
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sync();
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result = tests[i].run();
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CPRINTF("\n%s %d\n", tests[i].name, result);
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uart_flush_output();
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}
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CPRINTS("I2C test suite finished");
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uart_flush_output();
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while (1) {
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watchdog_reload();
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sleep(1);
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}
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}
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