Difference between revisions of "RTOS Zephyr"

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(starting page on Zephyr RTOS notes, in the most general sense. Other Zephyr topics pages already started on this wiki.)
 
m (→‎^ High Level Zephyr Topics: - Zephyr RTOS workspaces for RPI Pico and other boards)
 
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<center>
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[[Zephyr_device_driver_model|Zephyr device drivers]] :: [[Device_tree|Device Tree]]
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</center>
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== [[#top|^]] Overview ==
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2021-10-01 - This page to become central point on Neela Nurseries wiki for Zephyr RTOS notes, references and findings.
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== [[#top|^]] High Level Zephyr Topics ==
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Zephyr RTOS workspaces for RPI Pico and other boards . . .
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*  https://www.youtube.com/watch?v=twgPd9IQl88  Mr Green's Workshop
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Zephyr RTOS documentation (latest) regarding sensor API, with explanation of enumerations <code>sensor_channel</code> and <code>sensor_attribute</code>:
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High level topic "sensors":
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*  https://docs.zephyrproject.org/latest/reference/peripherals/sensor.html
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<ul>
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sensor API specific topics:
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*  https://docs.zephyrproject.org/latest/reference/peripherals/sensor.html#c.sensor_trigger_type
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*  https://docs.zephyrproject.org/latest/reference/peripherals/sensor.html#c.sensor_channel
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*  https://docs.zephyrproject.org/latest/reference/peripherals/sensor.html#c.sensor_attribute.SENSOR_ATTR_CONFIGURATION <i>( available in Zephyr v2.7.99 but not v2.6.0 )</i>
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*  https://docs.zephyrproject.org/latest/reference/peripherals/sensor.html#c.sensor_channel.SENSOR_CHAN_ALL
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sensor triggers and useful time string returning function (though may only return firmware running hours):
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*  https://docs.zephyrproject.org/latest/reference/peripherals/sensor.html#triggers
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</ul>
  
  
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*  https://docs.zephyrproject.org/latest/reference/kernel/threads/nothread.html#nothread
 
*  https://docs.zephyrproject.org/latest/reference/kernel/threads/nothread.html#nothread
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<!-- comment -->
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== [[#top|^]] Sensor Channel and Attribute Enumerations Best Practices ==
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<!-- comment -->
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== [[#top|^]] Zephyr To Explore ==
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What's this mbetutils test of snprintf() about?  Found while searching for Zephyr use of snprintf() function in ~/projects/zephyr-based/z4-sandbox-kionix-work/zephyr:
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<pre>
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./tests/crypto/mbedtls/src/mbedtls.c:65:#define mbedtls_snprintf  snprintf
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./tests/crypto/mbedtls/src/mbedtls.c:89:static int test_snprintf(size_t n, const char ref_buf[10], int ref_ret)
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./tests/crypto/mbedtls/src/mbedtls.c:95: ret = mbedtls_snprintf(buf, n, "%s", "123");
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./tests/crypto/mbedtls/src/mbedtls.c:108:static int run_test_snprintf(void)
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./tests/crypto/mbedtls/src/mbedtls.c:110: return (test_snprintf(0, "xxxxxxxxx", -1) != 0 ||
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./tests/crypto/mbedtls/src/mbedtls.c:111: test_snprintf(1, "", -1) != 0 ||
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./tests/crypto/mbedtls/src/mbedtls.c:112: test_snprintf(2, "1", -1) != 0 ||
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./tests/crypto/mbedtls/src/mbedtls.c:113: test_snprintf(3, "12", -1) != 0 ||
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./tests/crypto/mbedtls/src/mbedtls.c:114: test_snprintf(4, "123", 3) != 0 ||
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./tests/crypto/mbedtls/src/mbedtls.c:115: test_snprintf(5, "123", 3) != 0);
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./tests/crypto/mbedtls/src/mbedtls.c:185: * Make sure we have a snprintf that correctly zero-terminates
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./tests/crypto/mbedtls/src/mbedtls.c:187: if (run_test_snprintf() != 0) {
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./tests/crypto/mbedtls/src/mbedtls.c:188: mbedtls_printf("the snprintf implementation is broken\n");
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</pre>
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== [[#top|^]] References ==
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<i>( stub section )</i>
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Latest revision as of 22:08, 19 April 2023

Zephyr device drivers :: Device Tree


^ Overview

2021-10-01 - This page to become central point on Neela Nurseries wiki for Zephyr RTOS notes, references and findings.


^ High Level Zephyr Topics

Zephyr RTOS workspaces for RPI Pico and other boards . . .

Zephyr RTOS documentation (latest) regarding sensor API, with explanation of enumerations sensor_channel and sensor_attribute:

High level topic "sensors":


Existing Zephyr notes on this wiki remain to move here. Note on Zephyr without threads:


^ Sensor Channel and Attribute Enumerations Best Practices

^ Zephyr To Explore

What's this mbetutils test of snprintf() about? Found while searching for Zephyr use of snprintf() function in ~/projects/zephyr-based/z4-sandbox-kionix-work/zephyr: 

./tests/crypto/mbedtls/src/mbedtls.c:65:#define mbedtls_snprintf   snprintf
./tests/crypto/mbedtls/src/mbedtls.c:89:static int test_snprintf(size_t n, const char ref_buf[10], int ref_ret)
./tests/crypto/mbedtls/src/mbedtls.c:95:	ret = mbedtls_snprintf(buf, n, "%s", "123");
./tests/crypto/mbedtls/src/mbedtls.c:108:static int run_test_snprintf(void)
./tests/crypto/mbedtls/src/mbedtls.c:110:	return (test_snprintf(0, "xxxxxxxxx", -1) != 0 ||
./tests/crypto/mbedtls/src/mbedtls.c:111:		test_snprintf(1, "", -1) != 0 ||
./tests/crypto/mbedtls/src/mbedtls.c:112:		test_snprintf(2, "1", -1) != 0 ||
./tests/crypto/mbedtls/src/mbedtls.c:113:		test_snprintf(3, "12", -1) != 0 ||
./tests/crypto/mbedtls/src/mbedtls.c:114:		test_snprintf(4, "123", 3) != 0 ||
./tests/crypto/mbedtls/src/mbedtls.c:115:		test_snprintf(5, "123", 3) != 0);
./tests/crypto/mbedtls/src/mbedtls.c:185:	 * Make sure we have a snprintf that correctly zero-terminates
./tests/crypto/mbedtls/src/mbedtls.c:187:	if (run_test_snprintf() != 0) {
./tests/crypto/mbedtls/src/mbedtls.c:188:		mbedtls_printf("the snprintf implementation is broken\n");


^ References

( stub section )



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