Dear all;
I try to move 2 motor with L298N motor driver card and MSP430G2553. I
tried some basic codes, but right motor does not work. When I give energy
to right motor can move. So, problem is not in motor. But, when I tried
to move both motors only one motor can move (the motor that is driven by
IN1 and IN2. I added code to below. I can not find my error. Could you
help me please?
#include <msp430.h>
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
DCOCTL=CALDCO_1MHZ;
BCSCTL1=CALBC1_1MHZ;
P1DIR |= BIT6; //Set pin 1.6 to the output direction.
P1SEL |= BIT6; //Select pin 1.6 as our PWM output.
TA0CCR0 = 255; //Set the period in the Timer A0 Capture/Compare 0
register to 255
TA0CCTL1 = OUTMOD_7;
TA0CCR1 = 255;
TA0CTL = TASSEL_2 + MC_1; //TASSEL_2 selects SMCLK as the clock
source, and MC_1 tells it to count up to the value in TA0CCR0.
P1DIR|=BIT1+BIT2+BIT3+BIT4;
P1OUT|=BIT1+BIT3;
P1OUT&=~(BIT2+BIT4);
}
BIT1=IN1;
BIT2=IN2;
BIT3.=IN3;
BIT5=IN4;
Both enable pins are connected P1.6 PWM output. I hope you can
provide information. Regards.
---------------------------------------
Posted through http://www.EmbeddedRelated.com
L298 PWM Problem
Started by ●March 27, 2017
Reply by ●March 27, 20172017-03-27
>Dear all; > >I try to turn 2 motors with pwm by using L298N motor driver card andMSP430G2553. I tried some codes, but right motor does not work. When I give direct energy from a supply to right motor without using motor driver or micrroprocessor it can turn. So, problem is not in motor. But, when I tried>to turn both motors by using MSP430 launchpad and L298N only one motorcan turn (the motor that is driven by IN1 and IN2. I added code to below. I can not find my error. Could you>help me please? > >#include <msp430.h> > >int main(void) { > WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer > DCOCTLÊLDCO_1MHZ; > BCSCTL1ÊLBC1_1MHZ; > P1DIR |= BIT6; //Set pin 1.6 to the output direction. > P1SEL |= BIT6; //Select pin 1.6 as our PWM output. > TA0CCR0 = 255; //Set the period in the Timer A0 Capture/Compare0>register to 255 > TA0CCTL1 = OUTMOD_7; > TA0CCR1 = 255; > TA0CTL = TASSEL_2 + MC_1; //TASSEL_2 selects SMCLK as the clock >source, and MC_1 tells it to count up to the value in TA0CCR0. > > P1DIR|=BIT1+BIT2+BIT3+BIT4; > P1OUT|=BIT1+BIT3; > P1OUT&=~(BIT2+BIT4); > >} >BIT1=IN1; >BIT2=IN2; >BIT3.=IN3; >BIT5=IN4; > > Both enable pins are connected P1.6 PWM output. I hope you can >provide information. Regards. >--------------------------------------- >Posted through http://www.EmbeddedRelated.com--------------------------------------- Posted through http://www.EmbeddedRelated.com
Reply by ●March 27, 20172017-03-27
On 27.3.17 06:49, engineergc wrote:> Dear all; > > I try to move 2 motor with L298N motor driver card and MSP430G2553. I > tried some basic codes, but right motor does not work. When I give energy > to right motor can move. So, problem is not in motor. But, when I tried > to move both motors only one motor can move (the motor that is driven by > IN1 and IN2. I added code to below. I can not find my error. Could you > help me please? >(Code clipped, TV) 1. It does not speed up a response to send the same question multiple times. It may annoy potential responders. 2. There is no way to answer to your questions without the schematic diagrams of the electronics. 3. This has a strong smell of homework / school project. Is it? -- -TV
Reply by ●March 27, 20172017-03-27
On Mon, 27 Mar 2017 14:39:42 +0300, Tauno Voipio wrote:> On 27.3.17 06:49, engineergc wrote: >> Dear all; >> >> I try to move 2 motor with L298N motor driver card and MSP430G2553. I >> tried some basic codes, but right motor does not work. When I give >> energy to right motor can move. So, problem is not in motor. But, when >> I tried to move both motors only one motor can move (the motor that is >> driven by IN1 and IN2. I added code to below. I can not find my error. >> Could you help me please? >> >> > (Code clipped, TV) > > 1. It does not speed up a response to send the same question > multiple times. It may annoy potential responders.Indeed.> 2. There is no way to answer to your questions without the > schematic diagrams of the electronics.Or at least a pin-by-pin description of the signals you're sending out, including the frequency of the PWM signal. -- Tim Wescott Control systems, embedded software and circuit design I'm looking for work! See my website if you're interested http://www.wescottdesign.com
Reply by ●March 27, 20172017-03-27
On Sun, 26 Mar 2017 22:49:54 -0500, engineergc wrote:> Dear all; > > I try to move 2 motor with L298N motor driver card and MSP430G2553. I > tried some basic codes, but right motor does not work. When I give > energy to right motor can move. So, problem is not in motor. But, when > I tried to move both motors only one motor can move (the motor that is > driven by IN1 and IN2. I added code to below. I can not find my error. > Could you help me please? > > #include <msp430.h> > > int main(void) { > WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer DCOCTL=CALDCO_1MHZ; > BCSCTL1=CALBC1_1MHZ; > P1DIR |= BIT6; //Set pin 1.6 to the output direction. > P1SEL |= BIT6; //Select pin 1.6 as our PWM output. > TA0CCR0 = 255; //Set the period in the Timer A0 Capture/Compare > 0 > register to 255 > TA0CCTL1 = OUTMOD_7; > TA0CCR1 = 255; > TA0CTL = TASSEL_2 + MC_1; //TASSEL_2 selects SMCLK as the clock > source, and MC_1 tells it to count up to the value in TA0CCR0. > > P1DIR|=BIT1+BIT2+BIT3+BIT4; > P1OUT|=BIT1+BIT3; > P1OUT&=~(BIT2+BIT4); > > } > BIT1=IN1; > BIT2=IN2; > BIT3.=IN3; > BIT5=IN4; > > Both enable pins are connected P1.6 PWM output. I hope you can > provide information. Regards. > --------------------------------------- > Posted through http://www.EmbeddedRelated.comIIRC the L298 is a fairly slow device -- how fast is your PWM? -- Tim Wescott Control systems, embedded software and circuit design I'm looking for work! See my website if you're interested http://www.wescottdesign.com
Reply by ●March 27, 20172017-03-27
On 27.3.17 06:49, engineergc wrote:> Dear all; > > I try to move 2 motor with L298N motor driver card and MSP430G2553. I > tried some basic codes, but right motor does not work. When I give energy > to right motor can move. So, problem is not in motor. But, when I tried > to move both motors only one motor can move (the motor that is driven by > IN1 and IN2. I added code to below. I can not find my error. Could you > help me please?Have you read the datasheet and application notes at <http://www.st.com/en/motor-drivers/l298.html>? -- -TV
Reply by ●March 29, 20172017-03-29
>On 27.3.17 06:49, engineergc wrote: >> Dear all; >> >> I try to move 2 motor with L298N motor driver card and MSP430G2553. I >> tried some basic codes, but right motor does not work. When I giveenergy>> to right motor can move. So, problem is not in motor. But, when Itried>> to move both motors only one motor can move (the motor that is drivenby>> IN1 and IN2. I added code to below. I can not find my error. Could you >> help me please? > > >Have you read the datasheet and application notes at ><http://www.st.com/en/motor-drivers/l298.html>? > >-- > >-TVI read datasheet many times. But I can not find problem. --------------------------------------- Posted through http://www.EmbeddedRelated.com
Reply by ●March 29, 20172017-03-29
>On Mon, 27 Mar 2017 14:39:42 +0300, Tauno Voipio wrote: > >> On 27.3.17 06:49, engineergc wrote: >>> Dear all; >>> >>> I try to move 2 motor with L298N motor driver card and MSP430G2553. I >>> tried some basic codes, but right motor does not work. When I give >>> energy to right motor can move. So, problem is not in motor. But,when>>> I tried to move both motors only one motor can move (the motor thatis>>> driven by IN1 and IN2. I added code to below. I can not find myerror.>>> Could you help me please? >>> >>> >> (Code clipped, TV) >> >> 1. It does not speed up a response to send the same question >> multiple times. It may annoy potential responders. > >Indeed. > >> 2. There is no way to answer to your questions without the >> schematic diagrams of the electronics. > >Or at least a pin-by-pin description of the signals you're sending out, >including the frequency of the PWM signal. > >-- >Tim Wescott >Control systems, embedded software and circuit design >I'm looking for work! See my website if you're interested >http://www.wescottdesign.comHi Tim, I send same question two time because edit option is not exist. In first time I made some gramer mistakes therefore I wanted to correct them, since edit option is not available I added fixed form of my question as comment. I draw pin connections by using Fritzing program. but I can not add it to here. How I can add my schematic to here? Since I can not add schematic I made pin connections description below. P1.1>>IN1 P1.2>>IN2 P1.3>>IN3 P1.4>>IN4 P1.6>>ENA&ENB(I connected pwm output to both ENA and ENB pins of L298 motor driver card. Also Motor outputs are connected to OUT1,OUT2,OUT3 and OUT4 connectors as respectively. Then, GND of MSP430 and gnd of 9V battery are connected to GND connector of L298. By using this code or another code I can not turn both motor simultaneously.Only one motor can turn. ***SECOND CODE*** Also I tried many another codes. I added one of them to below. In this code I adjusted frequency of motor as 20 khz. If frequency is equal to 20 khz, period of motor is equal to T=1/f=1/20000 50us. I used clock source as SMCLK. SMCLK is supplied from DC0 and DCO is adjusted to 1MHZ. Therefore I write TA0CCRO=50 and I adjusted TA0CCR1=30. #include <msp430.h> int main(void) { WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer DCOCTL=CALDCO_1MHZ; BCSCTL1=CALBC1_1MHZ; P1DIR |=BIT2; //PWM output P1SEL |=BIT2; TA0CCR0 = 50; TA0CCTL1 = OUTMOD_7; TA0CCR1 = 30; TA0CTL = TASSEL_2 + MC_1; P1DIR |=(BIT1+BIT3); while(1) { P1OUT &=~(BIT1); P1OUT|=(BIT3); } } Then I made pin connections. P1.2>>ENA P1.1>>IN1 P1.3>>IN2 This code can turn motor(motor that connected to OUT1 and OUT2) as fastly. But if I try to turn other motor with this code, motor can not turn. I connected to pwm output P1.2 to ENB and P1.1 to IN3 and P1.3 to IN4. I spend many time to find my error. Why I can not turn 2 motors simultaneously with PWM? Where is my fault? Could you help me please? --------------------------------------- Posted through http://www.EmbeddedRelated.com
Reply by ●March 29, 20172017-03-29
>>On 27.3.17 06:49, engineergc wrote: >>> Dear all; >>> >>> I try to move 2 motor with L298N motor driver card and MSP430G2553. I >>> tried some basic codes, but right motor does not work. When I give >energy >>> to right motor can move. So, problem is not in motor. But, when I >tried >>> to move both motors only one motor can move (the motor that is driven >by >>> IN1 and IN2. I added code to below. I can not find my error. Couldyou>>> help me please? >> >> >>Have you read the datasheet and application notes at >><http://www.st.com/en/motor-drivers/l298.html>? >> >>-- >> >>-TV > > > > >--------------------------------------- >Posted through http://www.EmbeddedRelated.comHi; I send same question two time because edit option is not exist. In first time I made some gramer mistakes therefore I wanted to correct them, since edit option is not available I added fixed form of my question as comment. I draw pin connections by using Fritzing program. but I can not add it to here. How I can add my schematic to here? Since I can not add schematic I made pin connections description below. P1.1>>IN1 P1.2>>IN2 P1.3>>IN3 P1.4>>IN4 P1.6>>ENA&ENB(I connected pwm output to both ENA and ENB pins of L298 motor driver card. Also Motor outputs are connected to OUT1,OUT2,OUT3 and OUT4 connectors as respectively. Then, GND of MSP430 and gnd of 9V battery are connected to GND connector of L298. By using this code or another code I can not turn both motor simultaneously.Only one motor can turn. ***SECOND CODE*** Also I tried many another codes. I added one of them to below. In this code I adjusted frequency of motor as 20 khz. If frequency is equal to 20 khz, period of motor is equal to T=1/f=1/20000 50us. I used clock source as SMCLK. SMCLK is supplied from DC0 and DCO is adjusted to 1MHZ. Therefore I write TA0CCRO=50 and I adjusted TA0CCR1=30. #include <msp430.h> int main(void) { WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer DCOCTL=CALDCO_1MHZ; BCSCTL1=CALBC1_1MHZ; P1DIR |=BIT2; //PWM output P1SEL |=BIT2; TA0CCR0 = 50; TA0CCTL1 = OUTMOD_7; TA0CCR1 = 30; TA0CTL = TASSEL_2 + MC_1; P1DIR |=(BIT1+BIT3); while(1) { P1OUT &=~(BIT1); P1OUT|=(BIT3); } } Then I made pin connections. P1.2>>ENA P1.1>>IN1 P1.3>>IN2 This code can turn motor(motor that connected to OUT1 and OUT2) as fastly. But if I try to turn other motor with this code, motor can not turn. I connected to pwm output P1.2 to ENB and P1.1 to IN3 and P1.3 to IN4. I spend many time to find my error. Why I can not turn 2 motors simultaneously with PWM? Where is my fault? Could you help me please? --------------------------------------- Posted through http://www.EmbeddedRelated.com
Reply by ●March 29, 20172017-03-29
On 29.3.17 14:15, engineergc wrote:> P1.1>>IN1 > P1.2>>IN2 > P1.3>>IN3 > P1.4>>IN4 > P1.6>>ENA&ENB(I connected pwm output to both ENA and ENB pins of L298 > motor driver card. > Also Motor outputs are connected to OUT1,OUT2,OUT3 and OUT4 connectors as > respectively. > Then, GND of MSP430 and gnd of 9V battery are connected to GND connector > of L298. > > This code can turn motor(motor that connected to OUT1 and OUT2) as > fastly. But if I try to turn other motor with this code, motor can not > turn. > I connected to pwm output P1.2 to ENB and P1.1 to IN3 and P1.3 to IN4. > I spend many time to find my error. Why I can not turn 2 motors > simultaneously with PWM? Where is my fault? Could you help me please?1. Are you attempting to run two motors and the processor from a single 9V battery (IEC 6F22)? 2. Have you noticed that the MSP processor has to have an output high voltage at most L298 voltage feed - 2.5V? -- -TV
