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XMC47: DAC module: Functions for pattern generation
This commit is contained in:
Raman
parent
3ebd57255d
commit
5536736595
@ -25,6 +25,7 @@ return {
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linenoise = { shell_lines = 10, lua_lines = 50 },
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xmodem = false,
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niffs = false,
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xmc47_dac = true,
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},
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config = {
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egc = { mode = "alloc" },
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@ -26,6 +26,9 @@ function add_platform_components( t, board, cpu )
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t.xmc45_rtc = { macro = 'ENABLE_RTC' }
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t.xmc45_disp = { macro = 'ENABLE_OLED_DISPLAY' }
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end
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if board == 'XMC4700-RELAX' then
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t.xmc47_dac = { macro = 'ENABLE_DAC' }
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end
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end
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-- Add specific configuration to the 'configs' table
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@ -43,5 +46,8 @@ function get_platform_modules( board, cpu )
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m.rtc = { guards = { 'ENABLE_RTC' }, lib = '"rtc"', open = false }
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m.disp = { guards = { 'ENABLE_OLED_DISPLAY' }, lib = '"disp"', open = false }
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end
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if board == 'XMC4700-RELAX' then
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m.dac = { guards = { 'ENABLE_DAC' }, lib = '"dac"', open = false }
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end
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return m
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end
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@ -1,7 +1,7 @@
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-- eLua configuration file for the XMC4000 series of microcontrollers
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specific_files = "platform.c xmclib/src/xmc4_eru.c xmclib/src/xmc4_flash.c xmclib/src/xmc4_gpio.c xmclib/src/xmc4_rtc.c xmclib/src/xmc4_scu.c xmclib/src/xmc_can.c xmclib/src/xmc_ccu4.c xmclib/src/xmc_ccu8.c xmclib/src/xmc_common.c xmclib/src/xmc_dac.c xmclib/src/xmc_dma.c xmclib/src/xmc_dsd.c xmclib/src/xmc_ebu.c xmclib/src/xmc_ecat.c xmclib/src/xmc_eru.c xmclib/src/xmc_eth_mac.c xmclib/src/xmc_fce.c xmclib/src/xmc_gpio.c xmclib/src/xmc_hrpwm.c xmclib/src/xmc_i2c.c xmclib/src/xmc_i2s.c xmclib/src/xmc_ledts.c xmclib/src/xmc_posif.c xmclib/src/xmc_rtc.c xmclib/src/xmc_sdmmc.c xmclib/src/xmc_spi.c xmclib/src/xmc_uart.c xmclib/src/xmc_usbd.c xmclib/src/xmc_usic.c xmclib/src/xmc_vadc.c xmclib/src/xmc_wdt.c xmclib/gen/CLOCK_XMC4/clock_xmc4.c xmclib/gen/CLOCK_XMC4/clock_xmc4_conf.c xmclib/gen/UART/uart.c xmclib/gen/UART/uart_conf.c xmclib/gen/CPU_CTRL_XMC4/cpu_ctrl_xmc4.c xmclib/gen/CPU_CTRL_XMC4/cpu_ctrl_xmc4_conf.c xmclib/gen/FATFS/fatfs.c xmclib/gen/FATFS/fatfs_conf.c xmclib/gen/FATFS/sltha.c xmclib/gen/RTC/rtc.c xmclib/gen/RTC/rtc_conf.c xmclib/gen/SDMMC_BLOCK/sdmmc_block_private_sd.c xmclib/gen/SDMMC_BLOCK/sdmmc_block.c xmclib/gen/SDMMC_BLOCK/sdmmc_block_conf.c xmclib/gen/SYSTIMER/systimer.c xmclib/gen/SYSTIMER/systimer_conf.c xmclib/gen/DAVE.c pot.c dts.c rtc.c disp.c xmclib/gen/SPI_MASTER/spi_master.c xmclib/gen/SPI_MASTER/spi_master_conf.c xmclib/gen/GUI_SEGGERLIBRARY/gui_seggerlibrary.c xmclib/gen/GUI_SEGGERLIBRARY/gui_seggerlibrary_conf.c xmclib/gen/GUI_SEGGERLIBRARY/LCDConf.c xmclib/gen/GUI_SEGGERLIBRARY/Config/GUIConf.c xmclib/gen/GUI_SEGGERLIBRARY/Config/GUI_X.c ebu.c xmclib/gen/GLOBAL_DMA/global_dma.c xmclib/gen/GLOBAL_DMA/global_dma_conf.c"
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specific_files = "platform.c xmclib/src/xmc4_eru.c xmclib/src/xmc4_flash.c xmclib/src/xmc4_gpio.c xmclib/src/xmc4_rtc.c xmclib/src/xmc4_scu.c xmclib/src/xmc_can.c xmclib/src/xmc_ccu4.c xmclib/src/xmc_ccu8.c xmclib/src/xmc_common.c xmclib/src/xmc_dac.c xmclib/src/xmc_dma.c xmclib/src/xmc_dsd.c xmclib/src/xmc_ebu.c xmclib/src/xmc_ecat.c xmclib/src/xmc_eru.c xmclib/src/xmc_eth_mac.c xmclib/src/xmc_fce.c xmclib/src/xmc_gpio.c xmclib/src/xmc_hrpwm.c xmclib/src/xmc_i2c.c xmclib/src/xmc_i2s.c xmclib/src/xmc_ledts.c xmclib/src/xmc_posif.c xmclib/src/xmc_rtc.c xmclib/src/xmc_sdmmc.c xmclib/src/xmc_spi.c xmclib/src/xmc_uart.c xmclib/src/xmc_usbd.c xmclib/src/xmc_usic.c xmclib/src/xmc_vadc.c xmclib/src/xmc_wdt.c xmclib/gen/CLOCK_XMC4/clock_xmc4.c xmclib/gen/CLOCK_XMC4/clock_xmc4_conf.c xmclib/gen/UART/uart.c xmclib/gen/UART/uart_conf.c xmclib/gen/CPU_CTRL_XMC4/cpu_ctrl_xmc4.c xmclib/gen/CPU_CTRL_XMC4/cpu_ctrl_xmc4_conf.c xmclib/gen/FATFS/fatfs.c xmclib/gen/FATFS/fatfs_conf.c xmclib/gen/FATFS/sltha.c xmclib/gen/RTC/rtc.c xmclib/gen/RTC/rtc_conf.c xmclib/gen/SDMMC_BLOCK/sdmmc_block_private_sd.c xmclib/gen/SDMMC_BLOCK/sdmmc_block.c xmclib/gen/SDMMC_BLOCK/sdmmc_block_conf.c xmclib/gen/SYSTIMER/systimer.c xmclib/gen/SYSTIMER/systimer_conf.c xmclib/gen/DAVE.c pot.c dts.c rtc.c disp.c xmclib/gen/SPI_MASTER/spi_master.c xmclib/gen/SPI_MASTER/spi_master_conf.c xmclib/gen/GUI_SEGGERLIBRARY/gui_seggerlibrary.c xmclib/gen/GUI_SEGGERLIBRARY/gui_seggerlibrary_conf.c xmclib/gen/GUI_SEGGERLIBRARY/LCDConf.c xmclib/gen/GUI_SEGGERLIBRARY/Config/GUIConf.c xmclib/gen/GUI_SEGGERLIBRARY/Config/GUI_X.c ebu.c xmclib/gen/GLOBAL_DMA/global_dma.c xmclib/gen/GLOBAL_DMA/global_dma_conf.c dac.c"
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local ldscript = ""
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local target_files = ""
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241
src/platform/xmc4000/dac.c
Normal file
241
src/platform/xmc4000/dac.c
Normal file
@ -0,0 +1,241 @@
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// eLua Module for talking to the XMC's DAC peripheral
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//
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// Raman: I would really like to have this as a generic eLua module in
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// src/modules/dac.c. More thoughts on stack. For now, we'll hack a
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// simple function generator.
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#include "lualib.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "auxmods.h"
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#include "lrotable.h"
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#include "platform_conf.h"
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "xmc_dac.h"
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/* Local reference for a global DAC */
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#define ELUA_XMC_DAC ( ( XMC_DAC_t * )( void * )DAC )
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#define DAC_PATTERN_FIELDS 9
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/* The DAC's amplitude in milli volts */
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typedef enum DAC_AMP_MILLI_VOLTS_t {
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DAC_AMP_MILLI_VOLTS_1 = 0,
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DAC_AMP_MILLI_VOLTS_2,
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DAC_AMP_MILLI_VOLTS_4,
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DAC_AMP_MILLI_VOLTS_9,
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DAC_AMP_MILLI_VOLTS_17,
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DAC_AMP_MILLI_VOLTS_34,
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DAC_AMP_MILLI_VOLTS_69,
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DAC_AMP_MILLI_VOLTS_138,
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DAC_AMP_MILLI_VOLTS_275,
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DAC_AMP_MILLI_VOLTS_550,
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DAC_AMP_MILLI_VOLTS_1100,
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DAC_AMP_MILLI_VOLTS_2200,
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} DAC_AMP_MILLI_VOLTS_t;
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// ****************************************************************************
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// DAC pattern mode
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// Lua: dac.pattern.start( id )
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static int dac_pattern_start( lua_State *L )
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{
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unsigned id;
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id = luaL_checkinteger( L, 1 );
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if( !( id < NUM_DAC ) )
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return luaL_error( L, "dac %d does not exist", ( unsigned )id );
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XMC_DAC_CH_EnableOutput( ELUA_XMC_DAC, id );
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return 0;
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}
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// Lua: dac.pattern.stop( id )
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static int dac_pattern_stop( lua_State *L )
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{
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unsigned id;
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id = luaL_checkinteger( L, 1 );
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if( !( id < NUM_DAC ) )
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return luaL_error( L, "dac %d does not exist", ( unsigned )id );
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XMC_DAC_CH_DisableOutput( ELUA_XMC_DAC, id );
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return 0;
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}
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// Lua: dac.pattern.setup( id, pattern, amplitude, freq )
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// Raman: How about the DAC offsets? You can generate some really
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// strange signals with it!
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static int dac_pattern_setup( lua_State *L )
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{
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XMC_DAC_CH_CONFIG_t dac_config;
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uint32_t output_scale = 0;
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int field; // Which field are we handling ( 0 - 8 )
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uint8_t pat[ DAC_PATTERN_FIELDS ];
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DAC_AMP_MILLI_VOLTS_t amp;
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uint32_t freq;
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unsigned id;
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uint8_t patval;
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id = luaL_checkinteger( L, 1 );
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if( !( id < NUM_DAC ) )
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return luaL_error( L, "dac %d does not exist", ( unsigned )id );
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luaL_checktype( L, 2, LUA_TTABLE );
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if( lua_objlen( L, 2) != DAC_PATTERN_FIELDS )
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return luaL_error( L, "Pattern length must be 9 (PAT0, .. PAT8)" );
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for( field = 0; field < DAC_PATTERN_FIELDS; field++ )
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{
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lua_pushinteger( L, field + 1 );
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lua_gettable( L, 2 );
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if( lua_isnumber( L, -1 ) )
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{
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patval = ( uint8_t )lua_tonumber( L, -1 );
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if( patval < 0 || patval > 31 )
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return luaL_error( L, "DAC's 5-bit pattern values must be between 0 - 31" );
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pat[ field ] = patval;
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}
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else
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{
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return luaL_error( L, "DAC pattern: Expected number ( 0 - 31 )" );
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}
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lua_pop( L, 1 );
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}
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amp = luaL_checkinteger( L, 3 );
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if( amp < DAC_AMP_MILLI_VOLTS_1 || amp > DAC_AMP_MILLI_VOLTS_2200 )
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return luaL_error( L, "Invalid DAC amplitude setting" );
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freq = luaL_checkinteger( L, 4 );
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if( freq <= 0 )
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return luaL_error( L, "DAC frequency must be > 0" );
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dac_config.data_type = XMC_DAC_CH_DATA_TYPE_SIGNED;
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dac_config.output_negation = XMC_DAC_CH_OUTPUT_NEGATION_DISABLED;
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dac_config.output_offset = 0U;
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switch( amp )
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{
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case DAC_AMP_MILLI_VOLTS_1:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_DIV_32;
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break;
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case DAC_AMP_MILLI_VOLTS_2:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_DIV_16;
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break;
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case DAC_AMP_MILLI_VOLTS_4:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_DIV_8;
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break;
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case DAC_AMP_MILLI_VOLTS_9:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_DIV_4;
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break;
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case DAC_AMP_MILLI_VOLTS_17:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_DIV_2;
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break;
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case DAC_AMP_MILLI_VOLTS_34:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_NONE;
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break;
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case DAC_AMP_MILLI_VOLTS_69:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_MUL_2;
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break;
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case DAC_AMP_MILLI_VOLTS_138:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_MUL_4;
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break;
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case DAC_AMP_MILLI_VOLTS_275:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_MUL_8;
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break;
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case DAC_AMP_MILLI_VOLTS_550:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_MUL_16;
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break;
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case DAC_AMP_MILLI_VOLTS_1100:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_MUL_32;
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break;
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case DAC_AMP_MILLI_VOLTS_2200:
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output_scale = XMC_DAC_CH_OUTPUT_SCALE_MUL_64;
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break;
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}
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dac_config.output_scale = output_scale;
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XMC_DAC_CH_Init( ELUA_XMC_DAC, id, &dac_config );
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XMC_DAC_CH_StartPatternMode( ELUA_XMC_DAC, id, pat, XMC_DAC_CH_PATTERN_SIGN_OUTPUT_DISABLED, XMC_DAC_CH_TRIGGER_INTERNAL, freq );
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//XMC_DAC_CH_SetMode( ELUA_XMC_DAC, id, XMC_DAC_CH_MODE_IDLE );
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return 0;
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}
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// *****************************************************************************
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// DAC function map
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#define MIN_OPT_LEVEL 2
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#include "lrodefs.h"
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static const LUA_REG_TYPE dac_pattern_map[] =
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{
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{ LSTRKEY( "start" ), LFUNCVAL ( dac_pattern_start ) },
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{ LSTRKEY( "setup" ), LFUNCVAL( dac_pattern_setup ) },
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{ LSTRKEY( "stop" ), LFUNCVAL( dac_pattern_stop ) },
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{ LNILKEY, LNILVAL }
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};
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const LUA_REG_TYPE dac_map[] =
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{
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#if LUA_OPTIMIZE_MEMORY > 0
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/* { LSTRKEY( "noise" ), LROVAL( dac_noise_map ) }, */
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{ LSTRKEY( "pattern" ), LROVAL( dac_pattern_map ) },
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{ LSTRKEY( "MILLI_VOLTS_1" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_1 ) },
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{ LSTRKEY( "MILLI_VOLTS_2" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_2 ) },
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{ LSTRKEY( "MILLI_VOLTS_4" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_4 ) },
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{ LSTRKEY( "MILLI_VOLTS_9" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_9 ) },
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{ LSTRKEY( "MILLI_VOLTS_17" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_17 ) },
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{ LSTRKEY( "MILLI_VOLTS_34" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_34 ) },
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{ LSTRKEY( "MILLI_VOLTS_69" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_69 ) },
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{ LSTRKEY( "MILLI_VOLTS_138" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_138 ) },
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{ LSTRKEY( "MILLI_VOLTS_275" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_275 ) },
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{ LSTRKEY( "MILLI_VOLTS_550" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_550 ) },
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{ LSTRKEY( "MILLI_VOLTS_1100" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_1100 ) },
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{ LSTRKEY( "MILLI_VOLTS_2200" ), LNUMVAL( DAC_AMP_MILLI_VOLTS_2200 ) },
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{ LSTRKEY( "__metatable" ), LROVAL( dac_map ) },
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#endif
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{ LNILKEY, LNILVAL }
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};
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LUALIB_API int luaopen_dac( lua_State *L )
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{
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#if LUA_OPTIMIZE_MEMORY > 0
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return 0;
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#else // #if LUA_OPTIMIZE_MEMORY > 0
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luaL_register( L, AUXLIB_DAC, dac_map );
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// Set it as its own metatable
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lua_pushvalue( L, -1 );
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lua_setmetatable( L, -2 );
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// Set constants for direction/pullups
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MOD_REG_NUMBER( L, "MILLI_VOLTS_1", DAC_AMP_MILLI_VOLTS_1 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_2", DAC_AMP_MILLI_VOLTS_2 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_4", DAC_AMP_MILLI_VOLTS_4 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_9", DAC_AMP_MILLI_VOLTS_9 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_17", DAC_AMP_MILLI_VOLTS_17 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_34", DAC_AMP_MILLI_VOLTS_34 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_69", DAC_AMP_MILLI_VOLTS_69 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_138", DAC_AMP_MILLI_VOLTS_138 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_275", DAC_AMP_MILLI_VOLTS_275 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_550", DAC_AMP_MILLI_VOLTS_550 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_1100", DAC_AMP_MILLI_VOLTS_1100 );
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MOD_REG_NUMBER( L, "MILLI_VOLTS_2200", DAC_AMP_MILLI_VOLTS_2200);
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// Setup the new tables (pattern, others) inside dac
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lua_newtable( L );
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luaL_register( L, NULL, dac_pattern_map );
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lua_setfield( L, -2, "pattern" );
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// lua_newtable( L );
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// luaL_register( L, NULL, dac_noise_map );
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// lua_setfield( L, -2, "noise" );
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return 1;
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#endif // #if LUA_OPTIMIZE_MEMORY > 0
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}
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@ -16,11 +16,30 @@
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// Platform includes
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#include "DAVE.h"
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#include "xmc_dac.h"
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#if defined ( XMC4500_F144k1024 )
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# include "XMC4500.h"
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#endif
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#if defined ( XMC4700_F144x2048 )
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# include "XMC4700.h"
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#endif
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// Handles uart receive
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uint8_t recv_byte;
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// ****************************************************************************
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// Function references
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extern void ebu_main( void );
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// Cleanup later: This should in theory be in inc/platform.h
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void dacs_init( void );
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// ****************************************************************************
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// Platform initialization
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/*
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* Don't know why - the compiler complains that _init doesn't exist. I define the
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* symbol now so he stops nagging me.
|
||||
@ -29,14 +48,7 @@ void _init (void)
|
||||
{
|
||||
}
|
||||
|
||||
// Handles uart receive
|
||||
uint8_t recv_byte;
|
||||
|
||||
// ****************************************************************************
|
||||
// Platform initialization
|
||||
|
||||
extern void ebu_main (void);
|
||||
|
||||
/* Main platform initialization */
|
||||
int platform_init()
|
||||
{
|
||||
DAVE_Init();
|
||||
@ -48,10 +60,12 @@ int platform_init()
|
||||
ebu_main();
|
||||
#endif
|
||||
|
||||
/* DAC */
|
||||
dacs_init();
|
||||
|
||||
return PLATFORM_OK;
|
||||
}
|
||||
|
||||
|
||||
// ****************************************************************************
|
||||
// PIO
|
||||
|
||||
@ -213,3 +227,12 @@ u32 platform_uart_setup( unsigned id, u32 baud, int databits, int parity, int st
|
||||
return 0;
|
||||
}
|
||||
|
||||
// ****************************************************************************
|
||||
// DAC
|
||||
|
||||
void dacs_init( void )
|
||||
{
|
||||
/* SCU: Enable the DAC peripheral */
|
||||
XMC_DAC_Enable( (XMC_DAC_t *)(void *)DAC );
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user