PT2000 Dev Studio产生的微码解析一-Channel 1
1、channel1微码
微码可以连接为写入PT2000 code RAM代码，这部分是NXP特殊定制的代码，格式内容参照PT2000SWUG.pdf文件（可到NXP官网下载）理解。
1.1、微码源码
注意：*符号后面的文字的为注释，不参与编译，可以或略。
********************************************************************************
* Example Code
*
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********************************************************************************* This microcore will control BANK1 #define HSBatB1 hs1;
#define HSBoostB1 hs2;
#define LS1B1 ls1;
#define LS2B1 ls2;#define HSBatB2 hs3;
#define HSBoostB2 hs4;
#define LS1B2 ls3;
#define LS2B2 ls4;*cur1 for ucore0
*cur2 for uCore1#include "dram1.def";* ### Initialization phase ###
init0: stgn gain8.68 sssc; * Set the gain of the opamp of the current measure block 1ldjr1 eoinj0; * Load the eoinj line label Code RAM address into the register jr1 ldjr2 idle0; * Load the idle line label Code RAM address into the register jr2cwef jr1 _start row1; * If the start signal goes low, go to eoinj phase* ### Idle phase- the uPC loops here until start signal is present ###
idle0: cwer CheckStart start row2; * Define entry table for high start pinstoc on sssc; * Turn ON offset compensation
WaitLoop: wait row2; * uPC is stuck here for almost the whole idle time
CheckStart: joslr inj1_start start1; * Jump to inj1 if start 1 is highjoslr inj2_start start2; * Jump to inj2 if start 2 is highjmpr WaitLoop;* ### Shortcuts definition per the injector to be actuated ###
inj1_start: dfsct HSBatB1 HSBoostB1 LS1B1; * Set the 3 shortcuts: VBAT, VBOOST, LS2jmpr boost0; * Jump to launch phase
* ### Shortcuts definition per the injector to be actuated ###
inj2_start: dfsct HSBatB1 HSBoostB1 LS2B1; * Set the 3 shortcuts: VBAT, VBOOST, LS2jmpr boost0; * Jump to launch phase* ### Launch phase enable boost ###
boost0: stoc off sssc; load Iboost dac_sssc _ofs; * Load the boost phase current threshold in the current DACcwer peak0 cur1 row2; * Jump to peak phase when current is over thresholdstf low b0; * set flag0 low to force the DC-DC converter in idle modestf high b1; * DEBUGstos on on on; * Turn VBAT off, BOOST on, LS onwait row12; * Wait for one of the previously defined conditions* ### Peak phase continue on Vbat ###
peak0: ldcd rst _ofs keep keep Tpeak_tot c1; * Load the length of the total peak phase in counter 1stos off off on; * Turn VBAT off, BOOST off, LS onload Ipeak dac_sssc _ofs; * Load the peak current threshold in the current DACcwer bypass0 tc1 row2; * Jump to bypass phase when tc1 reaches end of countcwer peak_on0 tc2 row3; * Jump to peak_on when tc2 reaches end of countcwer peak_off0 cur1 row4; * Jump to peak_off when current is over thresholdstf high b0; * set flag0 high to release the DC-DC converter idle mode
peak_init0: cwer peak_off0 _cur1 row5; * Jump to peak_off when current is dischargedwait row125;peak_off0: ldcd rst ofs keep keep Tpeak_off c2; * Load in the counter 2 the length of the peak_off phasestos off off on; * Turn VBAT off, BOOST off, LS onwait row123;peak_on0: stos on off on; * Turn VBAT on, BOOST off, LS onwait row124; * Wait for one of the previously defined conditions* ### Bypass phase ###
bypass0: ldcd rst ofs keep keep Tbypass c3; * Load in the counter 3 the length of the off_phase phasestos off off off; * Turn VBAT off, BOOST off, LS offcwer hold0 tc3 row4; * Jump to hold when tc3 reaches end of countwait row14; * Wait for one of the previously defined conditions* ### Hold phase on Vbat ###
hold0: ldcd rst _ofs keep keep Thold_tot c1; * Load the length of the total hold phase in counter 2load Ihold dac_sssc _ofs; * Load the hold current threshold in the DACcwer eoinj0 tc1 row2; * Jump to eoinj phase when tc1 reaches end of countcwer hold_on0 tc2 row3; * Jump to hold_on when tc2 reaches end of countcwer hold_off0 ocur row4; * Jump to hold_off when current is over thresholdhold_on0: stos on off on; * Turn VBAT on, BOOST off, LS onwait row124; * Wait for one of the previously defined conditionshold_off0: ldcd rst _ofs keep keep Thold_off c2; * Load the length of the hold_off phase in counter 1stos off off on; * Turn VBAT off, BOOST off, LS onwait row123;* ### End of injection phase ###
eoinj0: stos off off off; * Turn VBAT off, BOOST off, LS offstf high b0; * set flag0 to high to release the DC-DC converter idle modejmpf jr2; * Jump back to idle phase* ### End of Channel 1 - uCore0 code ###*###############################################################################################################################
* ### Initialization phase ###
init1: stgn gain8.68 sssc; * Set the gain of the opamp of the current measure block 1ldjr1 eoinj1; * Load the eoinj line label Code RAM address into the register jr1ldjr2 idle1; * Load the idle line label Code RAM address into the register jr2cwef jr1 _start row1; * If the start signal goes low, go to eoinj phasebias all on;* ### Idle phase- the uPC loops here until start signal is present ###
idle1: stoc on sssc; * Turn ON offset compensationcwer CheckStart1 start row2; * Define entry table for high start pin
WaitLoop1: wait row2; * uPC is stuck here for almost the whole idle time
CheckStart1:joslr inj3_start start3; * Jump to inj3 if start 3 is highjoslr inj4_start start4; * Jump to inj4 if start 4 is highjmpr WaitLoop1;* ### Shortcuts definition per the injector to be actuated ###
inj3_start: dfsct HSBatB2 HSBoostB2 LS1B2; * Set the 3 shortcuts: VBAT, VBOOST, LS2jmpr boost1; * Jump to launch phase
* ### Shortcuts definition per the injector to be actuated ###
inj4_start: dfsct HSBatB2 HSBoostB2 LS2B2; * Set the 3 shortcuts: VBAT, VBOOST, LS2jmpr boost1; * Jump to launch phase* ### Launch phase enable boost ###
boost1: stoc off sssc;load Iboost dac_sssc _ofs; * Load the boost phase current threshold in the current DACcwer peak1 cur2 row2; * Jump to peak phase when current is over thresholdstf low b0; * set flag0 low to force the DC-DC converter in idle modestf high b2; * DEBUGstos on on on; * Turn VBAT off, BOOST on, LS onwait row12; * Wait for one of the previously defined conditions* ### Peak phase continue on Vbat ###
peak1: ldcd rst _ofs keep keep Tpeak_tot c1; * Load the length of the total peak phase in counter 1stos off off on; * Turn VBAT off, BOOST off, LS onload Ipeak dac_sssc _ofs; * Load the peak current threshold in the current DACcwer bypass1 tc1 row2; * Jump to bypass phase when tc1 reaches end of countcwer peak_on1 tc2 row3; * Jump to peak_on when tc2 reaches end of countcwer peak_off1 cur2 row4; * Jump to peak_off when current is over thresholdstf high b0; * set flag0 high to release the DC-DC converter idle mode
peak_init1: cwer peak_off1 _cur2 row5; * Jump to peak_off when current is dischargedwait row125;peak_off1: ldcd rst ofs keep keep Tpeak_off c2; * Load in the counter 2 the length of the peak_off phasestos off off on; * Turn VBAT off, BOOST off, LS onwait row123;peak_on1: stos on off on; * Turn VBAT on, BOOST off, LS onwait row124; * Wait for one of the previously defined conditions* Wait for one of the previously defined conditions* ### Bypass phase ###
bypass1: ldcd rst ofs keep keep Tbypass c3; * Load in the counter 3 the length of the off_phase phasestos off off off; * Turn VBAT off, BOOST off, LS offcwer hold1 tc3 row4; * Jump to hold when tc3 reaches end of countwait row14; * Wait for one of the previously defined conditions* ### Hold phase on Vbat ###
hold1: ldcd rst _ofs keep keep Thold_tot c1; * Load the length of the total hold phase in counter 2load Ihold dac_sssc _ofs; * Load the hold current threshold in the DACcwer eoinj1 tc1 row2; * Jump to eoinj phase when tc1 reaches end of countcwer hold_on1 tc2 row3; * Jump to hold_on when tc2 reaches end of countcwer hold_off1 cur2 row4; * Jump to hold_off when current is over thresholdhold_on1: stos on off on; * Turn VBAT on, BOOST off, LS onwait row124; * Wait for one of the previously defined conditionshold_off1: ldcd rst _ofs keep keep Thold_off c2; * Load the length of the hold_off phase in counter 1stos off off on; * Turn VBAT off, BOOST off, LS onwait row123;* ### End of injection phase ###
eoinj1: stos off off off; * Turn VBAT off, BOOST off, LS offstf high b0; * set flag0 to high to release the DC-DC converter idle modejmpf jr2; * Jump back to idle phase* ### End of Channel 1 - uCore1 code ###
1.2、微码解析
1）#define HSBatB1 hs1; #define HSBoostB1 hs2; #define LS1B1 ls1; #define LS2B1 ls2; #define HSBatB2 hs3; #define HSBoostB2 hs4; #define LS1B2 ls3; #define LS2B2 ls4;
定义hs1、hs2、ls1、ls2、hs3、hs4、ls3及ls4标签换成用户较熟悉的HSBatB1、HSBoostB1 、LS1B1 、LS2B1 、HSBatB2 、HSBoostB2 、LS1B2 及LS2B2 标签，这个标签在PT2000SWUG.pdf文件里有如下定义（实际值就是下表的第三列的二进制值）：
2）#include "dram1.def";
包含DRAM1的数据,也就是微码会引用下图中label列标签。引用这些label就是引用前面对应的HEX/Decimal值。
3）init0: stgn gain8.68 sssc;
init0：只是个行标签，表示在channel1 uc0初始化的含义，PT2000SWUG.pdf文件未说明，猜测就是类似于放在C语言中放在main（）里while（1）之前的初始化部分。
stgn：Set current measure operational amplifier gain，设置电流测量增益，参数有如下几种（对应的值是第三列），和MC33PT2000手册上对应。
gain8.68：为啥不是上图的gain8.7，未理解，怀疑是PT2000SWUG.pdf文件错误
sssc：这个参数意思是在相同channel，相同microcore处理，具体指就是第三列的00b，在这里的意思就是说在channel1 uc0核处理。
4）ldjr1 eoinj0;
跳转到结束喷油的含义
ldjr1：Load jump register 1 跳转寄存器1
eoinj0：行标签，end of injection phase，结束喷油
5）ldjr2 idle0;
类似于4），跳转到标签idle0
6）