diff options
| author | Christian Pointner <equinox@mur.at> | 2012-03-04 21:14:42 +0000 |
|---|---|---|
| committer | Christian Pointner <equinox@mur.at> | 2012-03-04 21:14:42 +0000 |
| commit | 5a3bb8920b733baf572aa89d4c63c88003e26763 (patch) | |
| tree | 6385624f99d290d6dde174911df72708a4a1e2e2 /software/ttx_crx/i2c.inc | |
| parent | added datasheet for PMGD370XN (diff) | |
moved ttx_crx to ctr
git-svn-id: https://svn.spreadspace.org/mur.sat@272 7de4ea59-55d0-425e-a1af-a3118ea81d4c
Diffstat (limited to 'software/ttx_crx/i2c.inc')
| -rw-r--r-- | software/ttx_crx/i2c.inc | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/software/ttx_crx/i2c.inc b/software/ttx_crx/i2c.inc deleted file mode 100644 index 52c90e3..0000000 --- a/software/ttx_crx/i2c.inc +++ /dev/null @@ -1,148 +0,0 @@ - ;; - ;; mur.sat - ;; - ;; Somewhen in the year 2012, mur.at will have a nano satellite launched - ;; into a low earth orbit (310 km above the surface of our planet). The - ;; satellite itself is a TubeSat personal satellite kit, developed and - ;; launched by interorbital systems. mur.sat is a joint venture of mur.at, - ;; ESC im Labor and realraum. - ;; - ;; Please visit the project hompage at sat.mur.at for further information. - ;; - ;; - ;; Copyright (C) 2011 Christian Pointner <equinox@mur.at> - ;; - ;; This file is part of mur.sat. - ;; - ;; mur.sat is free software: you can redistribute it and/or modify - ;; it under the terms of the GNU General Public License as published by - ;; the Free Software Foundation, either version 3 of the License, or - ;; any later version. - ;; - ;; mur.sat is distributed in the hope that it will be useful, - ;; but WITHOUT ANY WARRANTY; without even the implied warranty of - ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - ;; GNU General Public License for more details. - ;; - ;; You should have received a copy of the GNU General Public License - ;; along with mur.sat. If not, see <http://www.gnu.org/licenses/>. - ;; - - ;; ------------------------------------- -i2c_start - movlb .1 - bcf TRISB,I2C_SDA - nop - bcf TRISB,I2C_SCL - movlb .0 - return - - ;; ------------------ -i2c_restart - movlb .1 - bsf TRISB,I2C_SDA - nop - bsf TRISB,I2C_SCL - nop - nop - nop - bcf TRISB,I2C_SDA - nop - bcf TRISB,I2C_SCL - movlb .0 - return - - ;; ------------------ -i2c_stop - movlb .1 - bsf TRISB,I2C_SCL - nop - bsf TRISB,I2C_SDA - movlb .0 - return - - ;; ------------------ -i2c_send_byte - movwf I2C_BYTE - movlw .8 - movwf I2C_BIT_CNT - movlb .1 -i2c_send_byte_next - btfss I2C_BYTE,7 - bcf TRISB,I2C_SDA - btfsc I2C_BYTE,7 - bsf TRISB,I2C_SDA - nop - bsf TRISB,I2C_SCL - nop - nop - bcf TRISB,I2C_SCL - rlf I2C_BYTE,f - decfsz I2C_BIT_CNT,f - goto i2c_send_byte_next - - nop - nop - bsf TRISB,I2C_SDA - bsf TRISB,I2C_SCL - movlb .0 - movf PORTB,w - movlb .1 - bcf TRISB,I2C_SCL - bcf TRISB,I2C_SDA - movlb .0 - andlw b'00010000' - movwf I2C_BYTE - swapf I2C_BYTE,f - return - - ;; ------------------ -i2c_recv_byte - clrf I2C_BYTE - movlw .8 - movwf I2C_BIT_CNT - movlb .1 - bsf TRISB,I2C_SDA -i2c_recv_byte_loop - bsf TRISB,I2C_SCL - movlb .0 - btfsc PORTB,I2C_SDA - bsf I2C_BYTE,0 - movlb .1 - bcf TRISB,I2C_SCL - decfsz I2C_BIT_CNT,f - goto i2c_recv_byte_next - - bcf TRISB,I2C_SDA - movlb .0 - return - -i2c_recv_byte_next - bcf STATUS,C - rlf I2C_BYTE,f - goto i2c_recv_byte_loop - - ;; ------------------ -i2c_ack - movlb .1 - bcf TRISB,I2C_SDA - bsf TRISB,I2C_SCL - nop - nop - bcf TRISB,I2C_SCL - movlb .0 - return - - ;; ------------------ -i2c_nack - movlb .1 - bsf TRISB,I2C_SDA - bsf TRISB,I2C_SCL - nop - nop - bcf TRISB,I2C_SCL - bcf TRISB,I2C_SDA - movlb .0 - return - - ;; ------------------------------------- |