21. Functional ? Test ? Software ?
The ? functional ? test ? software ? tests ? all ? the ? features ? of ? the ? DK ‐ TS ‐ KIT. ? Additional ? hardware ? is ? required ? to ? test ? all ? the ?
features, ? but ? these ? additional ? tests ? can ? be ? bypassed ? if ? the ? necessary ? hardware ? is ? not ? available. ?
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Configuring ? the ? Functional ? Test ? setup ?
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Another ? DK ‐ TS ‐ KIT ? is ? required ? for ? complete ? functional ? testing. ? By ? connecting ? to ? another ? kit’s ? serial ? and ? CAN ? port, ? the ?
functional ? test ? can ? receive ? automatic ? responses ? for ? specific ? queries. ? The ? DK ‐ TS ‐ KIT ? only ? needs ? a ? version ? of ? firmware ? that ?
has ? the ? FCT ? Loopback ? program. ?? This ? document ? will ? refer ? to ? this ? second ? unit ? as ? the ? “loopback ? unit”. ?
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Start ? with ? a ? CARRIER ? board ? that ? is ? already ? connected ? as ? described ? above, ? but ? disconnect ? the ? PC ? to ? serial ? connection. ?
Connect ? a ? null ? modem ? cable ? between ? the ? CARRIER ? RS232 ? port ? (P4) ? and ? the ? loopback ? unit’s ? RS232 ? port ? (also ? P4). ? NOTE: ?
A ? gender ? change ? may ? be ? required. ? Then ? connect ? a ? DB9 ? cable ? between ? the ? CARRIER ? CAN ? port ? (P3) ? and ? loopback ? unit’s ?
CAN ? port ? (also ? P3). ? Power ? will ? be ? provided ? to ? the ? loopback ? unit ? from ? the ? CARRIER ? CAN ? port. ? When ? the ? loopback ? unit ?
boots ? up, ? select ? Settings ? and ? then ? FCT ? Loopback . ? You ? are ? now ? ready ? to ? do ? the ? functional ? test. ?
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Running ? Functional ? Test ?
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From ? the ? Main ? Menu, ? select ? Settings ? and ? then ? Functional ? Test ? to ? start ? the ? test. ? To ? abort ? the ? functional ? test, ? PRESS ? and ?
HOLD ? the ? Cancel ? button. ? If ? the ? current ? test ? cannot ? be ? performed, ? press ? Skip ? to ? go ? to ? the ? next ? test. ? Most ? tests ? will ? run ?
automatically ? and ? will ? report ? a ? green ? “Pass” ? or ? red ? “Fail” ? output. ? Some ? tests ? will ? require ? user ? input ? in ? the ? form ? of ? a ?
question ? and ? a ? Yes ? or ? No ? response. ? If ? a ? test ? fails, ? the ? functional ? test ? will ? pause ? to ? show ? the ? error ? – ? press ? OK ? to ? continue. ?
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The ? following ? tests ? are ? performed: ?
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SDRAM ? – ? Memory ? is ? sized ? and ? a ? basic ? test ? is ? performed ? to ? confirm ? read/write ? access. ?
LCD ? Colors ? – ? Red, ? Green, ? and ? Blue ? are ? displayed ? in ? smooth ? bands ? to ? ensure ? the ? LCD ? lines ? are ? correct. ?
External ? RTC ? – ? The ? CARRIER ? board ? has ? an ? external ? NXP ? I2C ? PCF8563 ? Real ? Time ? Clock ? that ? is ? set ? to ? 1/1/2009, ?
8:00:00 ? and ? then ? sampled ? for ? 3 ? seconds ? to ? verify ? that ? it ? is ? operational. ?
Internal ? RTC ? – ? The ? LPC2478 ? has ? an ? internal ? RTC ? that ? is ? programmed ? to ? 1/1/2009, ? 8:00:00 ? and ? then ? sampled ? for ?
3 ? seconds ? to ? verify ? that ? it ? is ? operational. ?
EEPROM ? – ? The ? EEPROM ? is ? tested ? for ? communication ? and ? integrity. ?
Temperature ? Sensor ? – ? The ? CARRIER ? board ? has ? an ? external ? LM75A ? that ? is ? tested ? to ? be ? in ? a ? range ? of ? 20 ‐ 30 ? C. ?
Serial ? Port ? – ? A ? serial ? command ? is ? sent ? to ? the ? loopback ? unit ? and ? a ? response ? detected. ?
CAN ? Port ? – ? An ? 8 ? byte ? message ? is ? sent ? via ? CAN ? to ? the ? loopback ? unit ? and ? a ? response ? detected. ?
Micro ? SDCard ? – ? A ? FAT ? formatted ? Micro ? SDCard ? that ? is ? inserted ? into ? the ? SOMDIMM ‐ LPC2478 ? J2 ? slot ? is ? read ? to ?
verify ? that ? the ? file ? TESTSDC.TXT ? is ? correct. ? (SDHC ? not ? supported) ?
USB ? Host ? – ? A ? FAT ? formatted ? USB ? Flash ? drive ? inserted ? into ? the ? CARRIER ? board ? P1 ? slot ? is ? read ? to ? verify ? that ? the ? file ?
TESTUSB.TXT ? is ? correct. ?
Accelerometer ? – ? The ? on ? board ? accelerometer ? detects ? when ? the ? CARRIER ? board ? is ? rotated ? 90 ? degrees ? back ? (LCD ?
facing ? towards ? the ? back ? and ? upside ? down) ? and ? then ? rotated ? forward ? 90 ? degrees ? (LCD ? facing ? forward ? and ? right ?
side ? up). ?
LEDs ? and ? Buttons ? – ? All ? four ? LEDs ? (LED1 ? to ? LED4) ? on ? the ? CARRIER ? board ? are ? lit ? by ? pressing ? the ? push ? button ?
switches ? SW1 ? to ? SW4. ?
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