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comparison src/eeprom_rs232.asm @ 218:8fbd8c5ac51f

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1.71beta start
author heinrichsweikamp
date Fri, 19 Dec 2014 17:56:40 +0100
parents 56276a2418f9
children 5a4801918be9
comparison
equal deleted inserted replaced
217:3f169eff873c 218:8fbd8c5ac51f
151 call speed_normal ; 16MHz 151 call speed_normal ; 16MHz
152 enable_rs232_2: 152 enable_rs232_2:
153 movlw T2CON_NORMAL 153 movlw T2CON_NORMAL
154 cpfseq T2CON 154 cpfseq T2CON
155 bra enable_rs232_2 ; Wait until speed is normal 155 bra enable_rs232_2 ; Wait until speed is normal
156 bcf PORTE,0 ; Start comms
156 ;init serial port1 (TRISC6/7) 157 ;init serial port1 (TRISC6/7)
157 movlw b'00100100' ; BRGH=1, SYNC=0 158 movlw b'00100100' ; BRGH=1, SYNC=0
158 movwf TXSTA1 159 movwf TXSTA1
159 movlw b'10010000' 160 movlw b'10010000'
160 movwf RCSTA1 161 movwf RCSTA1
163 global disable_rs232 164 global disable_rs232
164 disable_rs232: 165 disable_rs232:
165 clrf RCSTA1 166 clrf RCSTA1
166 clrf TXSTA1 ; UART disable 167 clrf TXSTA1 ; UART disable
167 bcf PORTC,6 ; TX hard to GND 168 bcf PORTC,6 ; TX hard to GND
169 bsf PORTE,0 ; Stop comms
168 return 170 return
169 171
170 global rs232_wait_tx 172 global rs232_wait_tx
171 rs232_wait_tx: 173 rs232_wait_tx:
172 btfss TXSTA1,TRMT ; RS232 Busy? 174 btfss TXSTA1,TRMT ; RS232 Busy?