SIM18 не могу запустить Опции

[alexdos]

Собрал тестовую платку, не видит спутников. На том же месте расположения внешней антенны EB500 принимает координаты. Ежели взять SIM18_EVB kit, то работает. Схема включения взята с страницы 31 документа SIM18_Hardware Design_V1.00.pdf.

[CADiLO]

C какой версией прошивки модуль? Если можно фото стикера.
Для тестовой и серийных партий разный алгоритм включения.

Для серийных модулей так:

4.1.2
Starting SIM18
For initial power up, the RTC must start oscillating to sequence the Finite State Machine. RTC startup time may vary.
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When power is first applied, SIM18 goes into a low-power mode while RTC starts and FSM sequences though to ”ready-to-start” state.
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The host is not required to control nRESET pin since SIM18 internal reset circuitry handles detection of application of power.
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While in ”ready-to-start” state, SIM18 awaits a pulse to the ON_OFF input pin to start.
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Since RTC startup time varies, detection of the time when SIM18 is ready to accept an ON_OFF pulse requires the host to either wait for a fixed interval, to monitor a pulse on SIM18 WAKEUP output that indicates FSM ”ready-to-start”, or simply to assert a pulse on the ON_OFF input every second until SIM18 starts by indicating a high on WAKEUP or generation of host port messages.

4.1.3
Verification of SIM18 Start
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SIM18 WAKEUP pin will go high to indicate the internal processor is started.
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System activity indication depends upon the chosen serial interface:
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UART with no flow control: When it is activated, SIM18 will output messages at the selected UART speed and message types.
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UART with flow control: Host flow control must be released to allow SIM18 to send messages.
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I2C multi-master mode with no bus contention: SIM18 will spontaneously send messages at the speed and message types selected.
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I2C multi-master mode with bus contention: SIM18 will send messages after the I2C bus contention resolution process allows SIM18 to send.
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SPI: Since SIM18’s SPI is slave, there is no possible indication of system ”ready” through SPI interface. The host must initiate SPI connection approximately one second after WAKEUP goes high.