硬件环境- }4 i3 @# r1 i4 F# m
芯片 STM32F334C8Tx C1 n9 Z; U/ g: A V
开发板 STM32F3348-Discovery2 x- F: }, W8 b" G4 m
升降压电路
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试验目的4 H2 S' s) s7 I' w3 |! d
输入电压范围2-5V，恒定升压到10V输出6 a' o7 q' ^2 m# B- C0 w
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实现原理. s( R: P- K& Q" y0 O
根据原理图得知，要实现BOOST功能，需要控制PA8恒为高电平
+ z6 m F* Z! {然后控制PA10为高电平，PA11低电平时为电感L3充电。
) M% Q1 z+ U \) K0 N" A0 ^再控制PA11为高电平，PA10低电平，让电感与输入电压一起放电，达到升压的目的
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1 g( g9 O& t* P" V" P# S3 i软件配置
4 w; N! i8 |! ?1 E: @; z& x1、ADC采样
! \5 V3 S6 V$ m# }! n) m4 d因为BOOST电路有纹波，为了实现ADC的精准采样，需要在纹波上升沿中间的瞬间进行准确采样
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需要将ADC配置为HRTIM触发采样! ~: V5 W! o. ~7 S( j
- y) j {: ]; A) `+ _首先进行ADC基本配置4 S" n, D# h+ O* ?& ?% b
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- hadc1.Instance = ADC1; //OK
& X& l3 P9 F/ U6 X8 `, C - hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;//OK
u$ j5 A$ @6 g4 @. j - hadc1.Init.Resolution = ADC_RESOLUTION_12B;//OK0 P8 H: G9 m) G, k4 R/ x, G( j
- hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;//OK! W- G- z8 _' Z! g2 X4 H1 t8 A
- hadc1.Init.ContinuousConvMode = DISABLE; //OK' B" p) X1 A( j) e( b; a& h
- hadc1.Init.DiscontinuousConvMode = DISABLE;//OK
& ]5 a- T" r ?6 U# I, |& u& } - hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;//OK# D) b/ X- U6 ^. ^0 `- c" h# v
- hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; //OK
c0 N) o+ ?/ A3 R - hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;//OK
! Y6 |" p2 K. i% E - hadc1.Init.NbrOfConversion = 1;//OK# [/ a, j* q8 {. y6 U& f
- hadc1.Init.DMAContinuousRequests = DISABLE;//OK8 n0 Z2 V1 G7 [& m8 x3 n3 Y
- hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;//OK; W- \% [; K. @" E a) a3 \
- hadc1.Init.LowPowerAutoWait = DISABLE; //OK" @2 t. i# |8 c3 `2 ?/ q. `4 |
- hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;//OK. ]2 }9 V% S% b
- if (HAL_ADC_Init(&hadc1) != HAL_OK)$ a+ {; Z- C3 Z1 \9 k* P
- {3 E b6 K5 b' v$ H, j, y
- Error_Handler();
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. h1 h' ?: o1 h5 T- |& q( p' R* D0 Z* ]然后配置ADC为HRTIM触发采样: w% i" ~& F0 ^5 |% h) A
- h* D# p. z. t$ Q% B- /** Configure Injected Channel
' @7 R g$ I8 ^ L - */
h- R: y' Y0 Q% Q - sConfigInjected.InjectedChannel = ADC_CHANNEL_2; //OK
. x; {# w& i8 s! w# [ - sConfigInjected.InjectedRank = ADC_INJECTED_RANK_1; //OK
2 {9 [" i8 C. W: e - sConfigInjected.InjectedSingleDiff = ADC_SINGLE_ENDED;//OK
+ o' t5 L0 i1 h; _' Z - sConfigInjected.InjectedNbrOfConversion = 2;//OK1 a! N) z; N; x% k, l0 _ y
- sConfigInjected.InjectedSamplingTime = ADC_SAMPLETIME_7CYCLES_5;//OK
# J; Q) W" g2 j$ f - sConfigInjected.ExternalTrigInjecConvEdge = ADC_EXTERNALTRIGINJECCONV_EDGE_RISING;//OK: ^, Z& D8 |8 r
- sConfigInjected.ExternalTrigInjecConv = ADC_EXTERNALTRIGINJECCONV_HRTIM_TRG2;//OK
- c U7 E; Y% M* o* O) ^% C - sConfigInjected.AutoInjectedConv = DISABLE;//OK5 [ ~( G5 i- O
- sConfigInjected.InjectedDiscontinuousConvMode = DISABLE;//OK
+ b" O W/ B) C! i8 V - sConfigInjected.QueueInjectedContext = DISABLE;//OK
* Z. f+ o* v4 }" t4 V - sConfigInjected.InjectedOffset = 0;//OK; O1 o, N! E K" ]1 |8 s! S7 Y* T
- sConfigInjected.InjectedOffsetNumber = ADC_OFFSET_NONE;//OK6 i( Q8 }6 P2 G& p3 c
- if (HAL_ADCEx_InjectedConfigChannel(&hadc1, &sConfigInjected) != HAL_OK)
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- Error_Handler();" j$ }( W; X# |, D2 ~
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- /** Configure Injected Channel7 K; P4 m1 h, N9 M8 B* u& k5 G
- */3 b: h2 u5 s' N1 k# G6 W4 U: M
- sConfigInjected.InjectedChannel = ADC_CHANNEL_4;//OK
. y6 M3 x! d1 L( e& y - sConfigInjected.InjectedRank = ADC_INJECTED_RANK_2;//OK8 B9 B) |' A+ d* D
- sConfigInjected.InjectedSamplingTime = ADC_SAMPLETIME_19CYCLES_5;//OK
+ z$ ]2 p( H2 i7 a. M - if (HAL_ADCEx_InjectedConfigChannel(&hadc1, &sConfigInjected) != HAL_OK)
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- Error_Handler();' r6 e& {" j; T
- }
+ h. |+ O0 p, k6 J4 ~最后启动ADC- /* Run the ADC calibration in single-ended mode */
6 z2 l, T& H( j* ] - HAL_ADCEx_Calibration_Start(&hadc1, ADC_SINGLE_ENDED);$ y. ?8 i4 u0 L: i. m! _
- 3 j. q$ T, A% q3 I1 X( k# v8 O. t! c6 x
- /* Start ADC1 Injected Conversions */ $ i g% a% U' r" d5 p! W
- HAL_ADCEx_InjectedStart(&hadc1);
2、HRTIM配置
4 a! \; P, _8 U1 r2 w7 m- {" NHRTIM需要配置的东西很多，需要对以下结构体进行初始化并调用库函数进行配置% t @' ], }6 d q/ H# A/ r- w6 }6 |0 y
) R! L3 R; l: {7 l- HRTIM_TimeBaseCfgTypeDef timebase_config;
- i% p6 m8 L5 X! ~" @* g3 K2 O - HRTIM_TimerCfgTypeDef timer_config;
$ c5 H6 K* U0 j9 F1 { - HRTIM_OutputCfgTypeDef output_config;8 z! h, Q5 a6 Q- D
- HRTIM_CompareCfgTypeDef compare_config;* X2 P6 s* P: d$ y3 G0 V! [" a
- HRTIM_DeadTimeCfgTypeDef HRTIM_TIM_DeadTimeConfig;: b' W" X' h8 r. y- ^
- HRTIM_ADCTriggerCfgTypeDef adc_trigger_config;
. K+ B! H; C, T$ z; `) W( f - HRTIM_FaultCfgTypeDef fault_config;
首先是HRTIM的基本配置1 f. [% y6 ^+ d' T
, f9 ?, Q9 P: `" G6 H9 c- /* ----------------------------*/" t N6 ]- h. V' l9 ^
- /* HRTIM Global initialization *// O% m% W* _+ P
- /* ----------------------------*/' f8 I4 x" X, q* n; p6 u
- /* Initialize the HRTIM handle (and clear it before for greater portability) */9 X: w# L# z- E1 \9 J; @' m2 g; Z
- hhrtim.Instance = HRTIM1; //OK
+ o4 S: H& V) c4 {" c - hhrtim.Init.HRTIMInterruptResquests = HRTIM_IT_NONE; //OK
* X6 @/ H# |2 V/ J$ g4 w9 P% D - hhrtim.Init.SyncOptions = HRTIM_SYNCOPTION_NONE; //OK
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( u* m! r! |" Z6 W2 ]) m% H) o- /* Initialize HRTIM */
' H& T$ X+ N# U7 M+ M - HAL_HRTIM_Init(&hhrtim); //OK
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' i; c, G; p. \, U+ a) J+ f- /* HRTIM DLL calibration: periodic calibration, set period to 14祍 */
# C2 ~1 l2 n* S' T6 w+ a - HAL_HRTIM_DLLCalibrationStart(&hhrtim, HRTIM_CALIBRATIONRATE_14); //OK( B- C2 c/ o6 I8 \# B" h, o; a7 Y
- /* Wait calibration completion*/
7 C [( H! B2 ^7 {6 L p. f1 z - if (HAL_HRTIM_PollForDLLCalibration(&hhrtim, 100) != HAL_OK) //OK
9 ~( D5 I/ C9 F: `4 {/ o6 { - {
' Y' O0 D0 x7 K/ r( A+ S. H - Error_Handler(); /* if DLL or clock is not correctly set */, ^" b' Z) t- s6 L: }- O4 J* r
- }
再配置HRTIM的频率为250KHZ
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! y6 h& p% R2 R- timebase_config.Period = BUCK_PWM_PERIOD; /* 250kHz switching frequency */ //OK3 R1 R* ~' Y9 u3 v- P3 L2 `
- timebase_config.RepetitionCounter = 31; /* 1 ISR every 32 PWM periods */ //OK
4 l( h" }! ?/ y9 y0 k - timebase_config.PrescalerRatio = HRTIM_PRESCALERRATIO_MUL32; //OK
) Q4 u0 A9 ?% _8 I - timebase_config.Mode = HRTIM_MODE_CONTINUOUS; //OK
+ b+ a" n# K1 e/ n - HAL_HRTIM_TimeBaseConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_A, &timebase_config);
, [ O: y& b$ A1 E0 _ - HAL_HRTIM_TimeBaseConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_B, &timebase_config);
再对TIMERA和TIMEB的一些参数进行配置4 T8 m) a" r9 s `9 U( I+ ~
3 s# n9 p% l# E: z- timer_config.DMARequests = HRTIM_TIM_DMA_NONE;//OK8 a8 h, K2 `9 n- @$ F& J
- timer_config.DMASrcAddress = 0x0;//OK& I" I+ j8 a) Y2 @) ^5 M
- timer_config.DMADstAddress = 0x0;//OK7 P$ F) j; w6 U8 k9 l; ]1 {( B
- timer_config.DMASize = 0x0;//OK4 L0 F! t, q; \, G0 _* W
- timer_config.HalfModeEnable = HRTIM_HALFMODE_DISABLED;//OK* R6 [" N# {8 y- j$ j
- timer_config.StartOnSync = HRTIM_SYNCSTART_DISABLED;//OK4 [1 W7 I8 q' ?) u7 ~, G9 r
- timer_config.ResetOnSync = HRTIM_SYNCRESET_DISABLED;//OK
$ m* C' B: G& C4 ] }' S2 [ - timer_config.DACSynchro = HRTIM_DACSYNC_NONE;//OK
! ]0 L" n: B6 D( N) m - timer_config.PreloadEnable = HRTIM_PRELOAD_ENABLED;//OK; i+ w7 J* ^8 N" O
- timer_config.UpdateGating = HRTIM_UPDATEGATING_INDEPENDENT;//OK
$ E$ M# x6 F+ w - timer_config.BurstMode = HRTIM_TIMERBURSTMODE_MAINTAINCLOCK;//OK
) P/ r$ A; p/ ?6 p% C - timer_config.RepetitionUpdate = HRTIM_UPDATEONREPETITION_ENABLED;//OK
0 l! Y* {# U( u2 ^$ C7 c+ l6 ^ @+ q - timer_config.ResetUpdate = HRTIM_TIMUPDATEONRESET_DISABLED; //OK9 K0 Q ?" T$ \( t: k5 J
- timer_config.InterruptRequests = HRTIM_TIM_IT_REP; //OK
$ {; R" l' w; _& h, o' R - timer_config.PushPull = HRTIM_TIMPUSHPULLMODE_DISABLED;//OK- d8 Q y0 R1 a' N# ^- R% s
- timer_config.FaultEnable = HRTIM_TIMFAULTENABLE_FAULT1;//OK' d W) M/ P/ p
- timer_config.FaultLock = HRTIM_TIMFAULTLOCK_READWRITE;//OK/ A+ ~) U) X2 N% v# p
- timer_config.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_ENABLED;//OK
0 O3 l4 _ ~2 h$ e! m* Z+ u; N - timer_config.DelayedProtectionMode = HRTIM_TIMER_A_B_C_DELAYEDPROTECTION_DISABLED;//OK
! L' c$ K) C5 g, y/ O l% b - timer_config.UpdateTrigger= HRTIM_TIMUPDATETRIGGER_NONE;//OK L- U; [: u ~+ d
- timer_config.ResetTrigger = HRTIM_TIMRESETTRIGGER_NONE;//OK
& ]( b1 P: Q* _( @/ }+ _! f% f - HAL_HRTIM_WaveformTimerConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_A, &timer_config);
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+ g' y% N% D4 k- HAL_HRTIM_WaveformTimerConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_B, &timer_config);
对 TA1 TA2 TB1 and TB2 的波形进行配置2 }3 k& k0 J2 s+ V3 X
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- output_config.Polarity = HRTIM_OUTPUTPOLARITY_HIGH; //OK
/ k- [( E; H( \: ]5 B7 X) J: b: V - output_config.SetSource = HRTIM_OUTPUTSET_TIMCMP1;//OK; b! E( F: V1 I7 I
- output_config.ResetSource = HRTIM_OUTPUTRESET_TIMPER;* j. E0 E- V( P/ ?6 G
- output_config.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE;//OK5 R0 q# k) v6 W6 h0 A
- output_config.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE;//OK
8 V! L" b" O( D% m - output_config.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_INACTIVE;
I; @) d9 {1 G( [/ d+ s/ C, j% Q - output_config.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED;//OK
3 b+ E7 B6 q+ ]( m - output_config.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;//OK2 |( h6 V) v' ~) K- Z1 ?+ p) Z4 S
- HAL_HRTIM_WaveformOutputConfig(&hhrtim,
* S. e2 p: D) g# x: T q# u) Z - HRTIM_TIMERINDEX_TIMER_A,
7 m- u4 x; w7 f# U5 } - HRTIM_OUTPUT_TA1,6 W1 C# P3 y# P, A/ \* X' M6 i) @
- &output_config);
& A( s% t4 H/ |) E; T - 4 d1 u: c% F$ j5 F- ]
- HAL_HRTIM_WaveformOutputConfig(&hhrtim,7 Z- N9 k& K& G. ?" S
- HRTIM_TIMERINDEX_TIMER_A,$ v5 l. A/ y4 \- ?5 s
- HRTIM_OUTPUT_TA2,7 j; k c/ B; N! K2 d& M
- &output_config);; j& Z, B7 ]+ {3 h
- + P5 C9 m& q4 K& D7 A( G* R$ y$ Y: F
- /* Set compare registers for duty cycle on TA1 在TA1上设置占空比寄存器*/
) Y3 ?9 Y0 i" q0 z: P - compare_config.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
2 h! z2 n1 d! }9 N% s/ w8 U, }* | - compare_config.AutoDelayedTimeout = 0;$ s1 p8 w: |+ c
- compare_config.CompareValue = BUCK_PWM_PERIOD - 0x60; /* Start with minimal duty cycle */
+ w1 C2 n- F# f, O) g - HAL_HRTIM_WaveformCompareConfig(&hhrtim,( O- b w Y. g6 g7 r9 U
- HRTIM_TIMERINDEX_TIMER_A,
7 _+ H8 _- s) O- F* K1 ]! K - HRTIM_COMPAREUNIT_1,
- m2 i9 {: B2 u& |0 { - &compare_config); ( b {, K4 I) ~2 {2 [
- output_config.Polarity = HRTIM_OUTPUTPOLARITY_HIGH;
/ o4 C H. C# L. @ R/ B! l - output_config.SetSource = HRTIM_OUTPUTSET_TIMCMP1;
& c. i% q6 v+ Y# T - output_config.ResetSource = HRTIM_OUTPUTRESET_TIMPER;
% z) h3 c6 C7 ^. A |2 D - output_config.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE;: _+ B+ x' f* S$ m1 P
- output_config.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE;
" m" t; g# [* Q% ^' p$ K - output_config.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_INACTIVE;5 n& r: E1 y7 J* _7 m
- output_config.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED;$ @3 q! J; Y# o z
- output_config.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;$ ~; `6 ~8 T) }8 B W! m! w
- HAL_HRTIM_WaveformOutputConfig(&hhrtim,
- A' ~9 o* J H# v" ]4 X7 Z4 e - HRTIM_TIMERINDEX_TIMER_B,2 _4 m! k; {# t5 z7 e: z
- HRTIM_OUTPUT_TB1,+ Z: c$ x6 L. S# n
- &output_config);
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- HAL_HRTIM_WaveformOutputConfig(&hhrtim,6 D4 d7 H' d+ h6 C! Y- d2 @
- HRTIM_TIMERINDEX_TIMER_B,2 B; J3 g/ `& A
- HRTIM_OUTPUT_TB2,
% \3 a3 w2 n3 A% U$ Y, x8 q4 L - &output_config);# P5 i" H( S! P m+ e( \- s
: \8 l* J" G; I3 V, z3 S4 K- /* Set compare registers for duty cycle on TB1 */% A( j% o7 ^: \; G* d
- compare_config.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;. [3 o' Y2 O& D$ O
- compare_config.AutoDelayedTimeout = 0;; c: r7 i: s5 B2 B+ L$ o
- compare_config.CompareValue = BUCK_PWM_PERIOD+1; /* 0% duty cycle */
/ ?% N K( ?) R+ c - HAL_HRTIM_WaveformCompareConfig(&hhrtim,
" p5 J, r, ` ~; i9 M1 X' { - HRTIM_TIMERINDEX_TIMER_B,1 A- Z# u: {! @1 B
- HRTIM_COMPAREUNIT_1,! M/ r' l" S! q4 }. j( {) N- i8 h9 u
- &compare_config);
死区时间配置，这一步配置完后，PA10和PA11高低电平不会完全重叠，将留一小段时间同时为低电平，如果不这样做的话，输入电源将存在短路现象
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( P. X6 L j q- C* `- HRTIM_TIM_DeadTimeConfig.FallingLock = HRTIM_TIMDEADTIME_FALLINGLOCK_WRITE;//OK
6 D3 h8 l4 J) W% x2 r! H/ k% L8 J - HRTIM_TIM_DeadTimeConfig.FallingSign = HRTIM_TIMDEADTIME_FALLINGSIGN_POSITIVE; //OK9 B" q2 G7 i% j* A' a1 ^* G
- HRTIM_TIM_DeadTimeConfig.FallingSignLock = HRTIM_TIMDEADTIME_FALLINGSIGNLOCK_READONLY; //OK
/ e% P' r; i. w! E" K* B - HRTIM_TIM_DeadTimeConfig.FallingValue = DT_FALLING; //OK4 ^- v" o7 o" b+ d2 U& ]
- HRTIM_TIM_DeadTimeConfig.Prescaler = HRTIM_TIMDEADTIME_PRESCALERRATIO_MUL8;" N; @8 I/ x6 N; p
- HRTIM_TIM_DeadTimeConfig.RisingLock = HRTIM_TIMDEADTIME_RISINGLOCK_WRITE; //OK
{, G1 S' U M- z4 x" X$ H - HRTIM_TIM_DeadTimeConfig.RisingSign = HRTIM_TIMDEADTIME_RISINGSIGN_POSITIVE; //OK
$ l1 q. y1 W* `# O - HRTIM_TIM_DeadTimeConfig.RisingSignLock = HRTIM_TIMDEADTIME_RISINGSIGNLOCK_READONLY; //OK
$ D; s4 g' P5 s; m' Z3 t - HRTIM_TIM_DeadTimeConfig.RisingValue = DT_RISING; //OK
3 z, c' C- f+ u7 I0 L- g; y* R - HAL_HRTIM_DeadTimeConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_A, &HRTIM_TIM_DeadTimeConfig);
7 G8 Z* {" e+ ^ - ( A7 E) m, }$ R
- /* Same parameters for Timer B */$ G. {( s B0 k
- HAL_HRTIM_DeadTimeConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_B, &HRTIM_TIM_DeadTimeConfig);
$ M C ?# Z' c2 W% R配置之后的波形：4 e) }1 F0 r# v( _% P; T- ]3 ]9 T3 B3 g
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将ADC与HRTIM关联起来，让HRTIM触发ADC采样
/ L7 u& E( _/ v
. I; R) p& g2 r* a2 v' t0 G. Z% Z- compare_config.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
. u, m8 O6 r- h2 s6 B0 t - compare_config.CompareValue = BUCK_PWM_PERIOD/2; /* Samples at 50% of period */& G# j( i" l$ T/ t
- compare_config.AutoDelayedTimeout = 0;7 x7 G! M' H; a' B
- HAL_HRTIM_WaveformCompareConfig(&hhrtim,9 Q7 {6 Q( e2 r( M6 Y
- HRTIM_TIMERINDEX_TIMER_A,- {1 {& o8 z& r$ p
- HRTIM_COMPAREUNIT_2,
9 L3 h# `8 j6 x - &compare_config);
# B) x) n9 j1 {% z: N6 S( \7 ? - - O2 M7 U0 Q7 _$ k% I0 Z" v
- adc_trigger_config.Trigger = HRTIM_ADCTRIGGEREVENT24_TIMERA_CMP2;
# s9 A; [/ l9 ^; N( m1 _ - adc_trigger_config.UpdateSource = HRTIM_ADCTRIGGERUPDATE_TIMER_A;
! R; C: T& g8 ^, ^8 P4 ~& r6 [, A - HAL_HRTIM_ADCTriggerConfig(&hhrtim,- g! |3 q, G7 E; G: p0 m( Z
- HRTIM_ADCTRIGGER_2,7 C" |/ w# O/ x) \) {/ y7 \# P& M6 ^* t
- &adc_trigger_config);
故障模式配置，故障输入时（PA12为低电平认为），将不输出PWM2 s- F3 W8 F, t' C: F& ] m. R
6 k0 ?+ S4 ^2 q/ O$ h3 a- /* ---------------------*/( O+ k$ \6 v9 G# S
- /* FAULT initialization *// {* ~# s' e$ p" @
- /* ---------------------*/1 F6 Y4 i% a! |% H7 v, n
- fault_config.Filter = HRTIM_FAULTFILTER_NONE;//OK/ V% j. F/ r0 w: @
- fault_config.Lock = HRTIM_FAULTLOCK_READWRITE;//OK' U, h& Q6 c+ Q; b
- fault_config.Polarity = HRTIM_FAULTPOLARITY_LOW;//OK+ r' R! g# R! G/ o& G3 m1 y0 G
- fault_config.Source = HRTIM_FAULTSOURCE_DIGITALINPUT; //OK2 X i e" }9 _" M+ |: A
- HAL_HRTIM_FaultConfig(&hhrtim,
1 U$ {- [+ ~4 o8 B1 }( |' w - HRTIM_FAULT_1,
; l: d: d% N' U. n - &fault_config);
' ? R" D7 Q4 i% N& g - / t, o9 ^: G; N% u( r
- HAL_HRTIM_FaultModeCtl(&hhrtim,! C- n; @* Q9 A) {* j2 B
- HRTIM_FAULT_1,
" @0 X u& x" c/ z - HRTIM_FAULTMODECTL_ENABLED);
- P; d- B; C2 NADC采样数据的读取
. `% w3 k4 |- l9 ]& E( B. W w根据原理图的分压电阻，来读取ADC并计算电压- /* -------------------------------------------------------------------------*/
; ]- f) B: E9 F5 Y: a/ R3 o6 {( K - /* Input and output voltages measures (can be displayed in a watch window) */
: ^% O- w( f9 W* _9 @5 P( q) ]& k- H" x! S - /* -------------------------------------------------------------------------*/
0 }# _9 x9 y l3 S0 r4 r - Vin = (HAL_ADCEx_InjectedGetValue(&AdcHandle, ADC_INJECTED_RANK_1) * 3300)/0xFFF;! e+ A. U' {5 i) W! I' U
- /* VIN bridge conversion is 4.97 (6.8K / 6.8K + 27K) */( E5 ]. b# K6 V4 p2 q( g
- Vin = (497 * Vin )/100; /* Values in mV (for debug convenience) */8 z4 X- `' P/ ]3 [! u6 }
- 7 K* x7 @, Y1 m( `) u+ o) {
- Vout = (HAL_ADCEx_InjectedGetValue(&AdcHandle, ADC_INJECTED_RANK_2) * 3300)/0xFFF;
8 J6 I: J9 p+ H8 ^! Q: J P1 h - /* VOUT bridge conversion is 5.03 (3.3K / 3.3K + 13.3K) */. O! ~# J1 _3 t8 j2 h
- Vout = (503 * Vout)/100; /* Values in mV (for debug convenience) */
BOOST自动升压
; B4 p* V7 k+ S; i' ?首先永久开启PA8为高电平% L/ b1 o5 e7 c- F, o
- /* BUCK side PMOS turned ON permanently BUCK侧PMOS永久开启 */
' O2 A8 x1 { v0 G- ] - __HAL_HRTIM_SETCOMPARE(&hhrtim, HRTIM_TIMERINDEX_TIMER_A, HRTIM_COMPAREUNIT_1, BUCK_PWM_PERIOD);
\8 K5 Y) t$ Z$ {5 y- CurrentDuty = __HAL_HRTIM_GETCOMPARE(&hhrtim, HRTIM_TIMERINDEX_TIMER_B, HRTIM_COMPAREUNIT_1);
根据电压来自动调节占空比大小，boost_cnt的作用是，让调节慢一些，否则调节太快了可能不稳定
- \* `# B* q, r
7 K" G, J# J% e0 }( g G- if(Vout <= 1000)
) Q9 D4 [0 I6 q! l" w6 y0 T3 T - {
' b* P7 \8 L) x - if(CurrentDuty > (BUCK_PWM_PERIOD / 4))
; G' l$ L$ q4 D8 j( v, ~; h - CurrentDuty -= 2;9 w- I8 D: _, q$ [$ d
- }# w( ~3 n" k, ^: O
- else if(Vout <= 9000)9 O" l9 J3 h- J: y0 _
- {
; Q) ^; A+ \! y$ | - if(CurrentDuty > (BUCK_PWM_PERIOD / 4))
- v2 N0 [/ G0 G0 }/ `8 y - CurrentDuty -= 1;: @9 S! y- H: f) W9 W! Z9 {, m
- }- q0 x; t, l* |# c7 H8 }
- else if(Vout <= 9980)
; r' Z1 q" V' E# r. g4 p' Q# Q w - {3 Q2 L: g3 D$ Y0 I' ~
- boost_cnt ++;4 k2 u/ V' r) g3 c2 n: [& W
- if(boost_cnt >= 10)
6 p' A- }; Z8 w+ U. I+ p, W. ]* G - {+ s) J' F9 b' |3 z, o f
- if(CurrentDuty > (BUCK_PWM_PERIOD / 4))" ~4 B8 H" d* i! ]
- CurrentDuty -= 1;6 s5 w) U* v* E% H3 H
- boost_cnt = 0;
% C. G, z( \2 n% D3 Z5 t& q( D) ]% L - }% ^* a5 y2 [3 e; c2 E
- }6 B& t" I5 u s: }8 J
( M/ H+ v+ Y Q: \-
3 Y$ i% k2 n) E! M$ d" y% b7 O! w# V4 B - if(Vout >= 10020)7 }- g- T/ [ I6 B8 [* J
- {' u w! W/ {9 z! a1 X' Q
-
7 N2 O v1 D. c8 r0 [ - boost_cnt ++;
/ J- a0 k- w- l$ b# A. K4 Z# C - if(boost_cnt >= 10)0 v+ b5 r+ [# d+ j6 F9 T+ Y
- {
3 s. F$ q I0 k - if(CurrentDuty < BUCK_PWM_PERIOD - 1)6 A9 q' J" g+ C5 Y/ Q) T- |
- CurrentDuty += 1;! G( }* x# ]; m& `6 ?9 N
- boost_cnt = 0;
7 O) F/ t, X# @1 r( A! L' M - } . C8 k' ~7 v& m' E/ N
- }0 L, [2 |3 b5 h2 j% O2 b7 [
- else if(Vout >= 15000)+ a' s9 H" ?$ X5 L, I M
- {
6 H# Y( e4 H' ?6 C- r2 e* W- d4 ? - if(CurrentDuty < BUCK_PWM_PERIOD - 2)
, h# E: q: N2 C" x l7 o4 k - CurrentDuty += 2;# e; p. L) X g$ S% Z1 j" C. A
- }
重新配置占空比( d; m1 S, X( j( g" _
# d6 |6 E0 y$ I! J! k
- if(Vout <= 9900)5 K. w: \1 V+ H1 S8 d
- {1 X- K( h. b+ K: N9 s
- / W; ]+ {7 w: m6 w/ N* f& i
- __HAL_HRTIM_SETCOMPARE(&hhrtim, HRTIM_TIMERINDEX_TIMER_B, HRTIM_COMPAREUNIT_1, CurrentDuty);
; I' n. _) a0 o% ?; t5 T - }
# r' O" f+ e, m. u - if(Vout >= 10100)
! _% `2 `4 d* u* f7 I - {# K# X7 H5 d/ r2 J" S
- __HAL_HRTIM_SETCOMPARE(&hhrtim, HRTIM_TIMERINDEX_TIMER_B, HRTIM_COMPAREUNIT_1, CurrentDuty);
' J+ E$ o& v6 E! e8 J, P7 _. w- a - }
. ]2 C' d1 R' F! u结果* U" a# j* s! i- v9 @
根据KEIL的WATCH窗口，可以看到数据，测试成功( T# X8 A, d' {1 f
! X: s6 D4 Y$ f, E
! z0 {) E) a! u% e) c6 B2 {6 k: q7 f/ `( V6 E% g, ]# ~
1 V3 w& x4 ~3 u
' }/ {" |0 @! {+ k7 W! Q9 T
, F$ k3 t: j* r8 _; R+ V
) \, `- Q0 p/ |
- i, C# O: S: d! h/ n1 O/ P, u, X! m: R; j {' s/ K
3 X( d* \% d6 g
" o# M T/ s0 @. G% q6 L3 a+ @& V' O- q
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发布时间：2021-12-5 10:21
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