ATEVK1105 Atmel, ATEVK1105 Datasheet - Page 189
ATEVK1105
Manufacturer Part Number
ATEVK1105
Description
KIT EVAL FOR AT32UC3A0
Manufacturer
Atmel
Series
AVR®32r
Type
MCUr
Datasheets
1.ATAVRONE-PROBECBL.pdf
(16 pages)
2.ATEVK1104.pdf
(826 pages)
3.ATEVK1105.pdf
(28 pages)
Specifications of ATEVK1105
Contents
Evaluation Board, Software and Documentation
Processor To Be Evaluated
AT32UC3A0512
Processor Series
AVR
Data Bus Width
32 bit
Interface Type
USART, TWI, USB, SPI, Ethernet
Operating Supply Voltage
3.3 V
Silicon Manufacturer
Atmel
Core Architecture
AVR
Core Sub-architecture
AVR UC3
Silicon Core Number
AT32UC3A0512
Silicon Family Name
AVR
Kit Contents
Board CD Docs
Rohs Compliant
Yes
For Use With/related Products
AT32UC3A0
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 189 of 826
- Download datasheet (20Mb)
22.6
22.6.1
22.6.2
32058J–AVR32–04/11
Programming Examples
8-bit LED-Chaser
Configuration of USART pins
It is assumed in this example that a subroutine "delay" exists that returns after a given time.
The example below shows how to configure a peripheral module to control I/O pins. It assumed
in this example that the USART receive pin (RXD) is connected to PC16 and that the USART
transmit pin (TXD) is connected to PC17. For both pins, the USART is peripheral B. In this
example, the state of the GPIO registers is assumed to be unknown. The two USART pins are
therefore first set to be controlled by the GPIO with output drivers disabled. The pins can then be
assured to be tri-stated while changing the Peripheral Mux Registers.
loop:
// Set R0 to GPIO base address
mov
orh
// Enable GPIO control of pin 0-8
mov
st.w
// Set initial value of port
mov
st.w
// Set up toggle value. Two pins are toggled
// in each round. The bit that is currently set,
// and the next bit to be set.
mov
orh
// Only change 8 LSB
mov
and
st.w
rol
rcall
rjmp
// Set up pointer to GPIO, PORTC
mov
orh
// Disable output drivers
R0, LO(AVR32_GPIO_BASE_ADDRESS)
R0, HI(AVR32_GPIO_BASE_ADDRESS)
R1, 0xFF
R0[AVR32_GPIO_GPERS], R1
R2, 0x01
R0[AVR32_GPIO_OVRS], R2
R2, 0x0303
R2, 0x0303
R3, 0x00FF
R3, R2
R0[AVR32_GPIO_OVRT], R3
R2
delay
loop
R0, LO(AVR32_GPIO_BASE_ADDRESS + PORTC_OFFSET)
R0, HI(AVR32_GPIO_BASE_ADDRESS + PORTC_OFFSET)
AT32UC3A
189
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