nRF51822 from Nordic Semiconductor
Bluetooth Low-Energy v4.1 compliant - interface to smartphones, tablets
System-on-Chip (SoC) solution - easily transformable into a deployable solution
Drop-in solution for production - no need to design your own antenna
FCC and CE Certified
3x LEDs, 3x Buttons
Powered by interface board or external 3.3V
Y5 Design LLC Interface Board
LPC11u35 from NXP
Low Power, ARM(r) Cortex-M0 suitable for a wide range of applications
On-Chip Bootloader - In-System programming (ISP) and in-application programming (IAP)
ROM-based USB drivers - Flash updates via USB supported
SPI, GPIO, i2C, UART, ADC
3x LEDs, Reset Button
3.3V powered via USB or external
USB interface - shipped with USB-A, male connector, pads for Micro female
Three changes, first it fixes:
https://github.com/mbedmicro/mbed/issues/761 (which was reported
slightly wrong because K20 has again different clocking from KLXX for
uarts).
Second it adds mcgpllfll to clk_freqs, which again is different for K20
compared to KLXX .
Finally it adds the fractional baudrate divider for more accurate serial
baudrates.
Change I2C driver transfer sequence to go according to H/W manual.
Changed contents are as below.
- Access procedure of ACTBT bit of MR3 register
- Issuance procedure of stop condition
When read the timer value, it have a potential to read abnormal value.
Because we used 16bit + 16bit cascade timer and read timer count separately.
Changed usticker timer from 16bit + 16bit cascade timer to 32bit timer to fix the bug.
The bugs of IRQ Edge Interrupt as below.
- Not call a function that was registered in rise, always call a function that was registered in the fall.
- If there are multiple interrupt sources, there is a possibility that end the wrong interrupt processing.
- Fix a bug reported here:
https://developer.mbed.org/questions/4872/SPISlave-Class-dosnt-work-on-LPC1114/
- Add IOCON settings to enable proper pin functions
- Remove non-busy check in slave_receive() function, since the SSP/SPI
is always in busy state when received a valid data according to the
device user manual
- Add bit mask in spi_slave_read() function
- Add TARGET_LPC1114 pin config in SPI_SLAVE test
- Tested with LPC11U24 SPI master and LPC1114 SPI slave
When making I2C communication freq, we used a fix value 33.3MHz as peripheral clock as below.
pclk = 33333333 / (2 << count);
But it is not dynamic when system clock is changed.
So, implement peripheral clock determination process.
Peripheral clock will be decided by RZ-A1H system clock mode.
Przemek Wirkus
Martin Kojtal
sg-
Nick DeLisi
Sissors
Michael Brudevold
Masao Hamanaka
ohagendorf
bcostm
Toyomasa Watarai
dinau
Yihui Xiong
kshoji