Zilog EZ80F916 Manuel d'utilisateur télécharger pdf (Page 31)

eZ80F91 Modular Development Kit

User Manual

UM017010-0112 Programming On-Chip Flash Memory

// Init_IRDA

// Make sure to first set PD2 as a port bit, an output and

// set it Low.

PD_ALT1 &= 0xFC; // PD0 = uart0tx, PD1 = uart0_rx

PD_ALT2 |= 0x03; // Enable alternate function

UART_LCTL0= 0x80; // Select dlab to access baud rate

generator

BRG_DLRL0=0x2F; // Baud rate Masterclock/(16*baudrate)

BRG_DLRH0=0x00; // High byte of baud rate

UART_LCTL0=0x00; // Disable dlab

UART_FCTL0=0xC7; // Clear tx fifo, enable fifo

UART_LCTL0=0x03; // 8bit, N, 1 stop

IR_CTL = 0x03; // enable IRDA Encode/decode and Receive

// enable bit.

// IRDA_Xmit

IR_CTL = 0x01; // Disable receive

Putchar(0xb0); // Output a byte to the uart0 port.

Programming On-Chip Flash Memory

To program the 32 K boot block on the internal on-chip Flash memory,

shunt JP1 on the eZ80F91 Mini Enet Module must be installed. Table 8

lists the settings for shunt JP1.

Table 8. Shunt JP1, eZ80F91 Module

Symbol Jumper Name

Shunt

Status Function Affected Device

JP1 F91_WE In (Default) On-chip Flash is enabled for

writing to boot block.

On-chip Flash

Out On-chip Flash memory boot

block is write-protected.

On-chip Flash

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 40 41

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Zilog EZ80F916 Manuel d'utilisateur Page 31