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Music online radio and Apple's Beats 1 radio station

11.06.2015

At the WWDC 2015 event, Apple introduced a new music service called Music.

Apple claims that its service is different from all competitors in that it has incorporated all the best that exists in this market. Like other similar platforms, Music will be able to take into account the preferences of each user in order to provide the most suitable music for him.

Apple itself calls the new online radio service with an emphasis on the social component. The fact is that users will be able to comment on albums or tracks that sound on the air. Of course, information about each artist will also be available, including the ability to read the feed on twitter and see photos on Instagram. Another distinctive feature is the presence in the service of not only music, but also video clips.

Separately, a radio station called Beats 1 will be created. It will stand out among others in that the selection of musical compositions for it will be made up of people, not a program.

The service will become available on June 30. The first three months of use will be free. After that, a month of using Apple Music will cost $10. Immediately at the start, the platform will be available in more than 100 countries around the world. In addition to Apple devices, the service can be run on Windows PCs and even on Android. True, the last OS will receive such an opportunity only in the fall. By the way, this step is extremely indicative for Apple, since the company often does not extend its "influence" to a competing platform.

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ATSAMR34/35 - LoRa radio plus Cortex-M0+ MCU for IoT 17.02.2019

Microchip announced the release of a single-chip LoRa (Long Range) wireless data transmission solution. The ATSAMR34 and ATSAMR35 chips operate in the 868 MHz frequency range and contain a low-power SAML21 Cortex M0+ microcontroller with a Semtech SX1276 transceiver. The new wireless microcontroller allows for two-way radio communication at a distance of up to 15 kilometers, while the device can be connected both in a standard LoRaWAN network (end devices of class A and C), and work in a closed group using a point-to-point or star scheme.

Thanks to its record low consumption of 790 nA in sleep mode, SAM R34/35 can be used in stand-alone devices that can run for years on a single set of batteries. On a single chip with a size of only 6x6 mm (BGA 0,65 mm), you can implement a complete IoT device. To communicate with the outside world, ATSAMR34/ATSAMR35 has a large number of interfaces - ADC 12-bit, 2 comparators, USB and up to 5 serial ports, each of which can be configured as USART, I2C, SPI or LIN.

For ATSAMR34/ATSAMR35 chips, a free Microchip LoRaWAN stack is offered as part of the Atmel Studio 7.0 development environment. Code examples are included with the Advanced Software Framework (ASF). For the hardware developer, a wiring diagram with the necessary piping and a reference wiring design for a 4-layer PCB are provided.

Features of ATSAMR34/ATSAMR35:

compact chip Cortex M0+ MCU & LoRa Radio;
package 6x6 mm BGA, 64 pins;
up to 256 KB Flash for code and stack;
up to 40 KB RAM, including 8 KB LP-RAM;
output power up to 20 dBm (100 mW);
energy efficient PA up to +13 dBm (20 mW);
sensitivity up to -136 dBm (LoRaWAN);
sensitivity down to -148 dBm (narrowband);
radio link budget up to 168 dB;
consumption in receive mode 17 mA (typ);
LoRa modulation, (G)FSK, (G)MSK and OOK.

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