AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 105

• Manufacturer Part Number: AT91RM9200-CI-002
• Description: IC ARM9 MCU 256 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-CI-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Description of the
SvcXmodem Structure
1768I–ATARM–09-Jul-09
The Xmodem Service implementation gives an example of SvcComm use.
The SvcXmodem service is a reusable implementation of the Xmodem protocol. It supports only
the 128-byte packet format and provides read and write functions. The SvcXmodem structure
defines:
With this structure, the Xmodem protocol can be used with all media (USART, USB, etc.). Only
private methods may be overloaded to adapt the Xmodem protocol to a new media.
The default implementation of the Xmodem uses a USART to send and receive packets. Read
and write functions implement Peripheral DMA Controller facilities to reduce interrupt overhead.
It assumes the USART is initialized, the memory buffer allocated and the interrupts
programmed.
A periodic timer is required by the service to manage timeouts and the periodic transmission of
the character “C” (Refer to Xmodem protocol). This feature is provided by the Tempo Service.
The following structure defines the Xmodem Service:
• a pointer to a handler initialized to readHandler or writeHandler
• a pointer to a function that processes the xmodem packet crc
• a pointer to a function that checks the packet header
• a pointer to a function that checks data
typedef struct _AT91S_Service
{
} AT91S_SvcComm, *AT91PS_SvcComm;
typedef struct _AT91PS_SvcXmodem {
int csr);
// Methods:
AT91S_SvcCommStatus (*Reset)
AT91S_SvcCommStatus (*StartTx)(struct _AT91S_Service *pService);
AT91S_SvcCommStatus (*StartRx)(struct _AT91S_Service *pService);
AT91S_SvcCommStatus (*StopTx) (struct _AT91S_Service *pService);
AT91S_SvcCommStatus (*StopRx) (struct _AT91S_Service *pService);
char
char
// Data:
struct _AT91S_Buffer *pBuffer; // Link to a buffer object
void *pChild;
// Public Methods:
AT91S_SvcCommStatus (*Handler) (struct _AT91PS_SvcXmodem *, unsigned int);
AT91S_SvcCommStatus (*StartTx) (struct _AT91PS_SvcXmodem *, unsigned int);
AT91S_SvcCommStatus (*StopTx)
// Private Methods:
AT91S_SvcCommStatus (*ReadHandler)
(*TxReady)(struct _AT91S_Service *pService);
(*RxReady)(struct _AT91S_Service *pService);
(struct _AT91S_Service *pService);
(struct _AT91PS_SvcXmodem *, unsigned int);
(struct _AT91PS_SvcXmodem *, unsigned
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