@XooM wrote:
Never mind, focus on the other topics. I don't like you questioning me. You don't have to answer every topic. Those who want to help me and guide me are already showing themselves. You are constantly being rude. I don't really get along with you. The question is very clear and simple. "How do you control these LEDs?" Sometimes I may want to light up just 1 LED, sometimes 10 LEDs. That's the question and it's simple. But never mind. You can ask 100 questions now.
There is nothing rude about what @Andrew Neil has posted. He is asking legitimate questions. It wasn't clear on what you were trying to do until after questions were asked. So now it's clear that you want to turn On more than 1 LED at a time and that you have 24 sensors.
@XooM wrote:
In LED display, segments are sent at once. Scanning is done as many times as the number of digits. In my design circuit, you have to scan 24 LEDs one by one. 24x5ms= 120ms causes very large flicker.
@Andrew Neil is also correct that you only need to update 8 groups at a time, instead of scanning for each of the 24 LED's.
Lean to use a data structure. I've shown you how to do it with inputs from a previous post of yours. You can do the same with LED status. You just need 8 groups of 3 LED's
// PollingRoutine.h
typedef struct
{
unsigned :5; // these bits are zero
unsigned U2_q2:1;
unsigned U2_q1:1;
unsigned U2_q0:1;
uint8_t U1; // when declaring variable, we can set U1 bits.
}LED_Status_t;
typedef union
{
struct
{
uint16_t data[8];
}_u16;
struct
{
LED_Status_t grp_1;
LED_Status_t grp_2;
LED_Status_t grp_3;
LED_Status_t grp_4;
LED_Status_t grp_5;
LED_Status_t grp_6;
LED_Status_t grp_7;
LED_Status_t grp_8;
}Status;
}LED_Group_t;
void PollingInit(void);
void PollingRoutine(void);
void LED_Update(void);
void GPIO_ReadSensor(LED_Group_t *led);
void HC4094write(uint16_t data);
- Initialize the led_group variable and set U1 (bits 15-8)
- Just poll the sensor inputs, 3 inputs at a time and update the bits for U2 (bits 7-5).
- bits 4-0 is zero.
- Then you can index through each of the 8 group and pass them to your HC4094write
.
// PollingRoutine.c
#include "main.h"
extern TIM_HandleTypeDef htim1;
LED_Group_t led_group =
{
.Status.grp_1.U1 = 0x80,
.Status.grp_2.U1 = 0x40,
.Status.grp_3.U1 = 0x20,
.Status.grp_4.U1 = 0x10,
.Status.grp_5.U1 = 0x08,
.Status.grp_6.U1 = 0x04,
.Status.grp_7.U1 = 0x02,
.Status.grp_8.U1 = 0x01
};
// called before main while loop
void PollingInit(void)
{
TimerCallbackRegisterOnly(&timerCallback, LED_Update);
TimerCallbackTimerStart(&timerCallback, LED_Update, 1, TIMER_REPEAT); // 100us * 1 = 200us, 100us * 2 = 200us, etc...
}
// called from main while loop
void PollingRoutine(void)
{
TimerCallbackCheck(&timerCallback);
GPIO_ReadSensor(&led_group);
}
// Update 8 groups one at a time using Timercallback
void LED_Update(void)
{
static int i = 0;
HC4094write(led_group._u16.data[i]);
if(++i == 8)
{
i = 0;
}
}
/*
* Set timer for 100us interrupt. You may need to adjust in case of flickering or dimness
*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim == &htim1)
{
TimerCallbackTick(&timerCallback);
}
}
/*
* Read 3 sensors in a group for each call to minimize blocking
*/
void GPIO_ReadSensor(LED_Group_t *led)
{
static int group = 1;
switch(group)
{
case 1:
led->Status.grp_1.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin); // adjust each pin for your sensor pin
led->Status.grp_1.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_1.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 2:
led->Status.grp_2.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_2.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_2.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 3:
led->Status.grp_3.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_3.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_3.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 4:
led->Status.grp_4.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_4.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_4.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 5:
led->Status.grp_5.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_5.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_5.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 6:
led->Status.grp_6.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_6.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_6.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 7:
led->Status.grp_7.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_7.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_7.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group++;
break;
case 8:
led->Status.grp_8.U2_q2 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_8.U2_q1 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
led->Status.grp_8.U2_q0 = HAL_GPIO_ReadPin(Sensor_x_GPIO_Port, Sensor_x_Pin);
group = 1;
break;
}
}
void HC4094write(uint16_t data)
{
}
Tips and Tricks with TimerCallback https://www.youtube.com/@eebykarl
If you find my solution useful, please click the Accept as Solution so others see the solution.
