diff options
| author | Christian Pointner <equinox@mur.at> | 2012-01-30 16:20:54 +0000 |
|---|---|---|
| committer | Christian Pointner <equinox@mur.at> | 2012-01-30 16:20:54 +0000 |
| commit | 41667b2f3fb80a3b0c020727012d2946e9e5a367 (patch) | |
| tree | bedf3615f5753b332084b2b966706feee4316ac4 /software | |
| parent | fixed ack pulse (diff) | |
try slower mode for ihu-ttx communcation
git-svn-id: https://svn.spreadspace.org/mur.sat@242 7de4ea59-55d0-425e-a1af-a3118ea81d4c
Diffstat (limited to 'software')
| -rw-r--r-- | software/ihu/ttx.inc | 72 | ||||
| -rw-r--r-- | software/ttx/ttx.asm | 21 |
2 files changed, 84 insertions, 9 deletions
diff --git a/software/ihu/ttx.inc b/software/ihu/ttx.inc index 82b8d14..6c05672 100644 --- a/software/ihu/ttx.inc +++ b/software/ihu/ttx.inc @@ -46,11 +46,32 @@ ttx_send_next_bit nop nop nop + nop + nop + nop + nop + nop + nop + nop + nop + nop bcf PORTD,TTX_SCL nop nop nop nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop rlf TTX_BYTE,f decfsz TTX_BIT_CNT,f goto ttx_send_next_bit @@ -68,12 +89,36 @@ ttx_recv_next_bit nop nop nop + nop + nop + nop + nop + nop + nop + nop + nop + nop bcf PORTD,TTX_SCL nop nop nop nop nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop rlf TTX_BYTE,f btfsc PORTD,TTX_SDA bsf TTX_BYTE,0 @@ -135,23 +180,44 @@ ttx_csum_error ttx_send call ttx_send_frame movwf TTX_BYTE + movwf TXREG call ttx_break + bsf PORTD,TTX_SDA bsf STATUS,RP0 bcf TRISD,TTX_SDA bcf STATUS,RP0 - btfsc TTX_BYTE,0 - bcf PORTD,TTX_SDA btfss TTX_BYTE,0 - bsf PORTD,TTX_SDA + bcf PORTD,TTX_SDA bsf PORTD,TTX_SCL nop nop nop + nop + nop + nop + nop + nop + nop + nop + nop + nop bcf PORTD,TTX_SCL nop nop nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop bsf STATUS,RP0 bsf TRISD,TTX_SDA bcf STATUS,RP0 diff --git a/software/ttx/ttx.asm b/software/ttx/ttx.asm index e579a3b..1580f34 100644 --- a/software/ttx/ttx.asm +++ b/software/ttx/ttx.asm @@ -151,9 +151,12 @@ ext_int_send_csum swapf RX_CMD,w andlw b'00001111' movwf RX_CMD -ext_int_wait_ack +ext_int_wait_ack_low + btfsc GPIO,SCLK + goto ext_int_wait_ack_low +ext_int_wait_ack_high btfss GPIO,SCLK - goto ext_int_wait_ack + goto ext_int_wait_ack_high btfss GPIO,SDAT bsf RX_STATE,complete bsf STATUS,RP0 @@ -423,6 +426,9 @@ rx_byte movlw .8 movwf RX_BIT_CNT clrf INDF +rx_byte_clk_low + btfsc GPIO,SCLK + goto rx_byte_clk_low rx_byte_clk_high btfss GPIO,SCLK goto rx_byte_clk_high @@ -437,7 +443,7 @@ rx_byte_clk_high rx_byte_next rlf INDF,f - goto rx_byte_clk_high + goto rx_byte_clk_low ;; ------------------------------------- rx_send_csum @@ -446,6 +452,9 @@ rx_send_csum bcf STATUS,RP0 movlw .8 movwf RX_BIT_CNT +rx_send_clk_low + btfsc GPIO,SCLK + goto rx_send_clk_low rx_send_clk_high btfss GPIO,SCLK goto rx_send_clk_high @@ -463,7 +472,7 @@ rx_send_clk_high rx_send_next rlf RX_CSUM,f - goto rx_send_clk_high + goto rx_send_clk_low ;; ------------------------------------- dottime @@ -795,12 +804,12 @@ seccnt_zero movf BEACON_INT,w movwf SECCNT btfss NVSTATE,safe - call send_beacon + ;; call send_beacon goto powerdown ;; this gets called whenever a message was received from ihu msg_received - call send_ack + ;; call send_ack bcf RX_STATE,complete clrf RX_STATE |