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RN4870/71 Bluetooth Low Energy Module User’s Guide Default:00
Response:AOK // Success ERR // Syntax error or invalid parameter
2.4.23 ST,<hex16>,<hex16>,<hex16>,<hex16>This command sets the initial connection parameters of the central device for future connections. The four input parameters are all 16-bit values in hex format. To modify current connection parameters, refer to Action command T (2.6.29). The corresponding Get command, GT, returns the desirable connection parameters set by command ST when connection is not established. Once the connection is estab- lished, the actual connection parameters displays in response to command GT. Connection interval, latency and time-out are often associated with how frequently a peripheral device must communicate with the central device, therefore, closely related to power consumption. The parameters, range and description are listed in Table 2-8.
TABLE 2-8: CONNECTION PARAMETERS Parameter Range DescriptionMinimum Interval 0x0006 - 0x0C80 The minimum time interval of communication between two connected devices. Unit: 1.25 ms. Maximum Interval 0x0006 - 0x0C80 The maximum time interval of communica- tion between two connected devices. Unit: 1.25 ms. Must be larger or equal to Minimum Interval. Latency 0x0000 - 0x01F3 The maximum number of consecutive must be less than connection events the peripheral device is (Timeout*10/Inter- not required to communicate with the central val*1.25-1) device. Time-out 0x000A - 0x0C80 The maximum time allowed between raw communications before the link is considered lost. Unit: 10 ms. Apple® iOS® devices have the following special requirements for these parameters: • Interval >= 16 • Latency <= 4 • Max_interval - min_interval >= 20 • Time-out <= 600 • (Interval + 16)*(Latency + 1) < Time-out * 8/3
Default:0006,0000,0200
Example:ST,0020,0064,0002,0064 // Set the interval between 40 ms to // 125 ms, latency to 2 // and timeout to 1 second
Response:AOK // Success ERR // Syntax error or invalid parameter
2.4.24 STA,<hex16>,<hex16>,<hex16>This command sets the advertisement interval and time-out parameters to connect advertisements defined by the 'A', 'IA' and 'NA' commands. The three inputs are fast advertisement interval, fast advertisement time-out, and slow advertisement interval, respectively. DS50002466C-page 24 2016-2018 Microchip Technology Inc. Document Outline Trademarks Table of Contents Preface Chapter 1. Overview 1.1 Introduction 1.2 Key Features 1.2.1 ASCII Command Interface 1.2.2 Transparent UART 1.2.3 Custom GATT Services 1.2.4 Embedded Scripting Feature 1.2.5 Remote Command Console 1.3 Command Mode and Data Mode Figure 1-1: Command Mode and Transparent UART (Data) mode 1.4 Accessing the RN4870/71 over UART Table 1-1: Default UART Settings 1.5 RN4870 PIO Control Lines Chapter 2. Command Reference 2.1 Introduction 2.2 Command Syntax 2.3 Set and Get Commands Table 2-1: Set and Get Commands Syntax Format 2.4 Set Commands 2.4.1 S-,<string> 2.4.2 S$,<char> 2.4.3 S%,<pre>,<post> 2.4.4 SA,<0-5 Table 2-2: Set I/O Capability 2.4.5 SB,<H8> Table 2-3: UART Baud Rate Settings 2.4.6 SC,<0-2> Table 2-4: CONNECTABLE AND NON-CONNECTABLE ADVERTIEMENT SETTINGS 2.4.7 SDA,<H16> 2.4.8 SDF,<text> 2.4.9 SDH,<text> 2.4.10 SDM,<text> 2.4.11 SDN,<text> 2.4.12 SDR,<text> 2.4.13 SDS,<text> 2.4.14 SF,1 2.4.15 SF,2 2.4.16 SGA,<0-5>/SGC,<0-5> Table 2-5: Typical Output Power values 2.4.17 SM,<1-3>,<hex16> 2.4.18 SN,<text> 2.4.19 SO,<0,1> 2.4.20 SP,<4/6 digit pin> 2.4.21 SR,<hex16> Table 2-6: Bitmap of Features 2.4.22 SS,<hex8> Table 2-7: Bitmap of Services 2.4.23 ST,<hex16>,<hex16>,<hex16>,<hex16> Table 2-8: Connection Parameters 2.4.24 STA,<hex16>,<hex16>,<hex16> 2.4.25 STB,<hex16> 2.4.26 SW,<hex8>,<hex8> Table 2-9: Pin Index and RN4870/71 Pins Table 2-10: Configurable Functions 2.5 Get Commands 2.5.1 GK 2.5.2 GNR 2.5.3 G<char> 2.6 Action Commands 2.6.1 +[,<text>] 2.6.2 $$$ 2.6.3 --- 2.6.4 !,<0,1> 2.6.5 @,<0-5> Table 2-11: analog Channels and Associated Pins 2.6.6 |I,<hex8> Table 2-12: Digital I/O Bitmap 2.6.7 |O,<hex8>,<hex8> 2.6.8 [,<1-2>,<0-3>,<hex16>,<hex16> Table 2-13: PWM Operation Selection Figure 2-1: Basic concept of PWM Operation 2.6.9 &,<MAC> 2.6.10 &C 2.6.11 &R 2.6.12 A[,<hex16>,<hex16>] 2.6.13 B 2.6.14 C 2.6.15 C,<0,1>,<address> 2.6.16 C<1-8> 2.6.17 D 2.6.18 F[,<hex16>,<hex16>] 2.6.19 I 2.6.20 IA,<hex8>,<Hex>/IB,<hex8>,<Hex>/IS,<hex8>,<Hex> NA,<hex8>,<Hex>/NB,<hex8>,<Hex>/NS,<hex8>,<Hex> Table 2-14: List of AD Types 2.6.21 JA,<0,1>,<MAC> 2.6.22 JB 2.6.23 JC 2.6.24 JD 2.6.25 K,1 2.6.26 M 2.6.27 O,0 2.6.28 R,1 2.6.29 T,<hex16>,<hex16>,<hex16>,<hex16> 2.6.30 U,<1-8,Z> 2.6.31 V 2.6.32 X 2.6.33 Y 2.6.34 Z 2.7 I2C Commands Table 2-15: I2C Peripheral Interface Table 2-16: I2C Commands 2.7.1 ]A Table 2-17: Clock values 2.7.2 ]Z 2.7.3 ]D 2.7.4 ]R 2.7.5 ]W 2.7.6 ]X 2.8 SPI Commands Table 2-18: SPI Peripheral Interface Table 2-19: SPI Contacts 2.8.1 {A Table 2-20: SPI Clock Polarity and Phase Settings Table 2-21: SPI Master Clock Rate Table 2-22: SPI Chip Select Pin 2.8.2 {Z 2.8.3 {X 2.8.4 }A Table 2-23: SPI Clock Polarity and Phase Settings Table 2-24: SPI Master Clock Rate 2.8.5 }Z 2.8.6 }R 2.8.7 }W 2.9 List Commands 2.9.1 LB 2.9.2 LC[,<P,UUID>] Figure 2-2: Listing Client Service and Characteristics 2.9.3 LS[,<P,UUID>] 2.9.4 LW 2.10 Service Configuration Commands 2.10.1 PC,<hex16/hex128>,<hex8>,<hex8> 2.10.2 PS,<hex16/hex128> 2.10.3 PZ 2.10.4 Defining Multiple Services 2.11 Characteristic Access Commands 2.11.1 Definition of Characteristic Access Commands Table 2-25: Format of GATT access commands 2.11.2 CHR 2.11.3 CHW 2.11.4 CI 2.11.5 SHR 2.11.6 SHW 2.12 Script Commands 2.12.1 WC 2.12.2 WP 2.12.3 WR[,<H6>] Table 2-26: Command WR Input Parameters and Associated Events 2.12.4 WW Chapter 3. Embedded Scripting Feature 3.1 Introduction 3.1.1 Script Overview 3.1.2 Event Driven Table 3-1: List of Events and Event Labels 3.1.3 Comments 3.1.4 Variables 3.1.5 Handle Association 3.1.6 Remote Function Call Chapter 4. Connection Examples 4.1 Connecting to RN4870 using SmartDiscover App Figure 4-1: Connect to the RN4870 module Figure 4-2: Service Discovery Figure 4-3: Characteristic Access 4.2 UART Transparent Connection Using SmartData Figure 4-4: Connect to RN4870 Figure 4-5: Data Exchange on SmartData APP Figure 4-6: Data Exchange on Terminal Emulator 4.3 Module-to-Module Connection Figure 4-7: Connecting two RN4870 modules Appendix A. Bluetooth Low Energy Fundamentals A.1 Introduction Table A-1: Characteristic Properties Figure A-1: GATT Service in RN4870 Appendix B. Transparent UART Service UUIDs B.1 Introduction Table B-1: Characteristic Properties Appendix C. Low-Power Operation C.1 Introduction Figure C-1: State Diagram Appendix D. Status Response Summary Quick Reference D.1 Introduction Table D-1: Status Messages Returned by RN4870 /71 Table D-2: Command Summary Quick Reference AMERICAS Corporate Office Atlanta Austin, TX Boston Chicago Dallas Detroit Houston, TX Indianapolis Los Angeles Raleigh, NC New York, NY San Jose, CA Canada - Toronto ASIA/PACIFIC Australia - Sydney China - Beijing China - Chengdu China - Chongqing China - Dongguan China - Guangzhou China - Hangzhou China - Hong Kong SAR China - Nanjing China - Qingdao China - Shanghai China - Shenyang China - Shenzhen China - Suzhou China - Wuhan China - Xian China - Xiamen China - Zhuhai ASIA/PACIFIC India - Bangalore India - New Delhi India - Pune Japan - Osaka Japan - Tokyo Korea - Daegu Korea - Seoul Malaysia - Kuala Lumpur Malaysia - Penang Philippines - Manila Singapore Taiwan - Hsin Chu Taiwan - Kaohsiung Taiwan - Taipei Thailand - Bangkok Vietnam - Ho Chi Minh EUROPE Austria - Wels Denmark - Copenhagen Finland - Espoo France - Paris Germany - Garching Germany - Haan Germany - Heilbronn Germany - Karlsruhe Germany - Munich Germany - Rosenheim Israel - Ra’anana Italy - Milan Italy - Padova Netherlands - Drunen Norway - Trondheim Poland - Warsaw Romania - Bucharest Spain - Madrid Sweden - Gothenberg Sweden - Stockholm UK - Wokingham Worldwide Sales and Service Worldwide Sales and Service
