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This page will contain the information about the combined lcd/button matrix [[http://www.midibox.org/forum/index.php?topic=7087.0|forum topic]]<sup>uCApps</sup> right now I'm using a modified version of the sm_simple C example\\ this code will be rewritten to make it more coherent modifications to [[http://www.ucapps.de/mios/sm_example1_v2.zip|scan matrix example]] <sup>uCApps</sup>\\ ==== Hardware ==== [[http://users.skynet.be/sky92755/DSEQ32_DOUT.pdf|DOUT wiring]]\\ \\ [[http://users.skynet.be/sky92755/DSEQ32_DIN.pdf|DIN wiring]]\\ ==== Software ==== in main.c:\\ <code> ... //second shiftregister drives the leds #define LEDOUT 1 ... void LM_SetRow(){ MIOS_DOUT_SRSet(LEDOUT,ledtest[sm_col]); } ///////////////////////////////////////////////////////////////////////////// // This function is called by MIOS before the shift register are loaded ///////////////////////////////////////////////////////////////////////////// void SR_Service_Prepare(void) __wparam { // call the Scan Matrix Driver SM_PrepareCol(); // call the Led Matrix Driver LM_SetRow(); } ... </code> \\ in sm_simple.asm: <code> ... global _sm_button_column global _sm_button_row global _sm_button_value global _sm_col ;; import lables extern _SM_NotifyToggle ; ========================================================================== accessram udata ; (no access ram required, these variables can be located anywhere) _sm_button_column res 1 ; exported to C, therefore an "_" has been added _sm_button_row res 1 _sm_button_value res 1 _sm_col res 1 ... SM_PrepareCol ;; select next DOUT register ;; (current column + 1) & 0x07 SET_BSR sm_selected_column incf sm_selected_column, W, BANKED ; (* see note below) andlw 0x07 ;_sm_col is used by LM_SetRow() movwf _sm_col call MIOS_HLP_GetBitANDMask ; (inverted 1 of 8 code) ... </code> \\ and finally in sm_simple.h: <code> ... extern unsigned char sm_button_value; extern unsigned char sm_col; ... </code> back to [[DSEQ32]]
