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+ / _____) _ | |
+ ( (____ _____ ____ _| |_ _____ ____| |__
+ \____ \| ___ | (_ _) ___ |/ ___) _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+ (______/|_____)_|_|_| \__)_____)\____)_| |_|
+ ©2013 Semtech-Cycleo
+
+Lora Gateway SPI stress test
+=============================
+
+1. Introduction
+----------------
+
+This software is used to check the reliability of the link between the host
+platform (on which the program is run) and the Lora concentrator register file
+that is the interface through which all interaction with the Lora concentrator
+happens.
+
+2. Dependencies
+----------------
+
+This program only access the Lora gateway HAL library through its loragw_reg
+"named registers" access sub-module.
+
+It was tested with beta8 of the libloragw library, and should be compatible
+with any later version of the library and the hardware, assuming the registers
+used for the tests are still present.
+
+The registers used are:
+LGW_VERSION
+LGW_IMPLICIT_PAYLOAD_LENGHT
+LGW_FSK_REF_PATTERN_LSB
+LGW_RX_DATA_BUF_ADDR
+LGW_RX_DATA_BUF_DATA
+A data buffer accessible through the 2 registers above must be implemented.
+
+3. Usage
+---------
+
+The tests run forever or until an error is detected.
+Press Ctrl+C to stop the application.
+
+When an error is detected, diagnosis information are displayed. Please refer to
+the source code for more details on what is displayed for diagnosis.
+
+All tests use pseudo-random data generated by the rand() function. The random
+generator is not seeded, and the same sequence of data will be use each time the
+program is launched.
+
+Basically, some random data is written, read back and then compared to the
+initial written data. Some "useless" read on others registers might be inserted
+to be sure that the data read back is coming from the hardware, and not from the
+internal buffer(s) of the software driver(s).
+
+Test 1 > R/W on a simple 8-bit register
+Test 2 > R/W on a simple 8-bit register with interstitial reads on VERSION
+Test 3 > R/W on a 32-bit register (short SPI bursts access)
+Test 4 > data buffer R/W (long SPI bursts access)
+
+4. Changelog
+-------------
+
+2013-10-18, beta 1
+Initial version.