Users Guide: Network Microcontroller Supplement User Manual

High-Speed Microcontroller User’s
Guide: Network Microcontroller
Supplement
204
dhcp_stop
Description: void dhcp_stop(void);
The dhcp_stop function disables the DHCP functionality and kills the DHCP client task.
rom_dhcp_notify
Description: int rom_dhcp_notify(void)
This function notifies of a DHCP state change and sends the TASK_DHCPSLEEP signal to the task originally called dhcp_init().
The DS80C400 silicon software expor
ts rom_dhcp_notify(). The rom_dhcp_notify() function serves as the default
DHCPnotify in
the function redirect table. The DHCP client calls DHCPnotify from the function redirect table when it acquires or
loses an IP.
TFTP FUNCTIONS/POINTERS
TFTP_MSG
The DS80C400 silicon software exports a pointer to the data buffer that is configured by the tftp_first task, the TFTP session
uses the tftp_first tast.
tftp_init
Description: int tftp_init(void);
The tftp_init function initializes the TFTP client. It sets up the data structures required for the TFTP client, most importantly the
TFTP_MSG data buf
fer. This function returns 0 in the accumulator if successful, nonzero otherwise.
tftp_first
Description: int tftp_first(
char *filename); /* pointer to filename for TFTP request */
The tftp_first function requests the first TFTP data block and waits for data. This function r
equests the file name specified at
*filename from the TFTP server and returns the number of bytes read along with a success/failure indication in the accumula-
tor. If this number is less than 512, the TFTP transfer has ended.
INPUT DESCRIPTION OUTPUT DESCRIPTION
DPTR0 *filename
ACC
R1:R0
Return value (= 0 for success)
#bytes read
Example: MOV DPTR, #FILENAME
ROMCALL tftp_first
INPUT DESCRIPTION OUTPUT DESCRIPTION
— ACC
Return value (= 0 for success)
Example: ROMCALL tftp_init
INPUT DESCRIPTION OUTPUT DESCRIPTION
ACC New DHCP state —
Example: ROMCALL rom_dhcp_notify
INPUT DESCRIPTION OUTPUT DESCRIPTION
— —
Example: ROMCALL dhcp_stop
Maxim Integrated