ST SP1ML-915 User manual

April 2015 DocID027779 Rev 1 1/8
8
UM1889
User manual
SP1ML modules getting started guide FW upgrade & simple
communication setup
Introduction
This document is a quick user guide explaining how to upgrade the FW in ST sub-GHz
modules SP1ML-868 and SP1ML-915 (hereafter referred to as SP1ML), and evaluation
tools STEVAL-SP1ML868 and STEVAL-SP1ML915 (hereafter referred to as STEVAL-
SP1ML).
It also provides a possible setup to quickly establish communication between two modules
using AT commands.
The SP1ML-868 and SP1ML-915 are complete RF modules based on the SPIRIT1
transceiver with integrated voltage regulation, antenna, crystal and STM32L1
microcontroller, in a compact surface-mount module form-factor.
The UART host interface allows simple connection to an external microcontroller.
Access to module features is provided through an extended AT command set.
Figure 1. SP1ML module
www.st.com

Contents UM1889
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Contents
1 SP1ML firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Set up quick data exchange between two SP1ML modules . . . . . . . . . 5
3 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

DocID027779 Rev 1 3/8
UM1889 SP1ML firmware upgrade
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1 SP1ML firmware upgrade
When receiving SP1ML or STEVAL-SP1ML samples, the user should ensure that they have
the latest version of the FW (available on request).
Hardware
•STEVAL-SP1ML evaluation board
or
•SP1ML module (wired with USB/UART converter)
Figure 2. STEVAL-SP1ML
Software
•Download “CP210x USB to UART Bridge VCP Drivers” (STEVAL-SP1ML is using
CP2102 USB/UART converter, so driver must be installed)
•Install the ST Flash loader demonstrator: www.st.com/stm32-flash-loader
•Ensure that you have the latest SP1ML FW from ST
Documentation
•Ensure that you have the latest version of the SP1ML datasheet (including AT
command set) and STEVAL-SP1ML data brief available on st.com
(www.st.com\subghzmodules).
Settings
•In order to force boot mode, the boot0 pin must be set to “1”. On the STEVAL-SP1ML it
can be achieved through JP1 or by connecting PAD10 and PAD11 together.
Figure 3. STEVAL-SP1ML JP1 connector

SP1ML firmware upgrade UM1889
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Flash loader configuration
•Select the COM port associated with CP2102
•Baud rate 115200
•Select target: STM32L_Med-density-128K
•Download address must be set to 0x8000000
FW upgrade
•Reset the module (or plug in the STEVAL-SP1ML) with the boot0 pin set to “1”
•Launch the FW upgrade procedure using the Flash loader settings described above.
Figure 4. Flash loader demonstrator

DocID027779 Rev 1 5/8
UM1889 Set up quick data exchange between two SP1ML modules
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2 Set up quick data exchange between two SP1ML
modules
Settings
•Connect two dongles to the PC USB port.
•Open 2 HyperTerminal sessions on the PC and connect to each dongle with associated
COM port (115200 Baud rate, local echo, CR+LF for Tx/Rx)
•By default, the module is in operation mode. In order to move it in command mode, the
“+++” escape sequence must be used.
•Using the “AT/S” command will then provide the module setting list
•Please refer to the command list provided in the SP1ML datasheet.
Figure 5. HyperTerminal
As an example, you can keep the default setting for each module, except:
Dongle/Module1
•S15 should be set to 0x00 (using HyperTerminal write ATS15=0x00)
•S16 should be set to 0x01 (using HyperTerminal write ATS16=0x01)
•Then send AT/C to store settings and ATO to move into operation mode
Dongle/Module2
•S15 should be set to 0x01 (using HyperTerminal write ATS15=0x01)
•S16 should be set to 0x00 (using HyperTerminal write ATS16=0x00)
•Then send AT/C to store settings and ATO to move into operation mode

Set up quick data exchange between two SP1ML modules UM1889
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Data exchange/cable replacement
•Now each module is in operating mode
•Any data written in HyperTerminal 1 (Dongle/Module1) will be received in
HyperTerminal 2 (Dongle/Module2).
•Any data written in HyperTerminal 2 (Dongle/Module2) will be received in
HyperTerminal 1 (Dongle/Module1).

DocID027779 Rev 1 7/8
UM1889 Revision history
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3 Revision history
Table 1. Document revision history
Date Revision Changes
24-Apr-2015 1 Initial release.

UM1889
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