Releases: radioshack16/rx220_sample
Releases · radioshack16/rx220_sample
4th_samle_OLED_disp_controlled_via_I2C
OLED, LCD char-display controlled via I2C.
v1.2.0
rx220_sample
Small sample C program as a HEW project for Akizuki AE-RX220 development board
3rd sample
DFT/FFT functions added.
On power up, DFT and FFT functions are tested and processing time is shown via serial port.
- FFT function spec:
- Input: real only
- Output: 0 to Nuquist frequency
- Precision: double(8 or 4byte)
(Renesas tool HEW can handle double type as either 8 or 4 byte.) - Number of input data supported: N=4(2^p)(3^q)(5^r)(7^s)
（4<=N<=128 and p, q, r and s is an integer >= 0） - Desimation type: decimation-in-time
- Radix: mixed radix
- intermediate stage: 8, 7, 5, 4, 3, 2
- terminal stage: 16, 8, 5, 4, 3, 2
- Implementation: recursively implemented:
a core function calls one of radix-specific functions depending on its input data count parameter M, and the called radix-specific function calls the core function
to perform sub-M FFT. - performance summary
For further details, see the 20160514_FFT_performance_on_RX621_RX220.pdf file.
Other functions: (the same as the 2nd sample)
- MTU2 generates 1ms signal and interrupt
- ADC converts 12 ch of analog input in scan mode
- ADC generates an interrupt on the end of scan
- Interupt handler send a char of hex for MSB 4bit of the AD value(Ch. 0)
every 2ms - LED1/2 on/off with 1s period
- Slide switch controls LED2
License: MIT License
- See the LICENSE.txt file for details.
2nd sample: ADC test code added
rx220_sample
Small sample C program as a HEW project for Akizuki AE-RX220 development board
<2nd sample>
- MTU2 generates 1ms signal and interrupt
- ADC converts 12 ch of analog input in scan mode
- ADC generates an interrupt on the end of scan
- Interupt handler send a char of hex for MSB 4bit of the AD value(Ch. 0)
every 2ms - LED1/2 on/off with 1s period
- Slide switch controls LED2
Blog : http://solar-club.jp/member/radioshack16/
1st sample
A small sample program for Akizuki AE-RX220 board:
- LED1/2 on/off with 1s period
- Slide switch controls LED2
- MTU2 generates 1ms signal and interrupt
- SCI1 send a character 'A' every 2ms from the interrupt handler