ESPHome  2024.3.2
sm10bit_base.cpp
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1 #include "sm10bit_base.h"
2 #include "esphome/core/log.h"
3 
4 namespace esphome {
5 namespace sm10bit_base {
6 
7 static const char *const TAG = "sm10bit_base";
8 
9 static const uint8_t SM10BIT_ADDR_STANDBY = 0x0;
10 static const uint8_t SM10BIT_ADDR_START_3CH = 0x8;
11 static const uint8_t SM10BIT_ADDR_START_2CH = 0x10;
12 static const uint8_t SM10BIT_ADDR_START_5CH = 0x18;
13 
14 static const uint8_t SM10BIT_DELAY = 2;
15 
16 // Power current values
17 // HEX | Binary | RGB level | White level | Config value
18 // 0x0 | 0000 | RGB 10mA | CW 5mA | 0
19 // 0x1 | 0001 | RGB 20mA | CW 10mA | 1
20 // 0x2 | 0010 | RGB 30mA | CW 15mA | 2 - Default spec color value
21 // 0x3 | 0011 | RGB 40mA | CW 20mA | 3
22 // 0x4 | 0100 | RGB 50mA | CW 25mA | 4 - Default spec white value
23 // 0x5 | 0101 | RGB 60mA | CW 30mA | 5
24 // 0x6 | 0110 | RGB 70mA | CW 35mA | 6
25 // 0x7 | 0111 | RGB 80mA | CW 40mA | 7
26 // 0x8 | 1000 | RGB 90mA | CW 45mA | 8
27 // 0x9 | 1001 | RGB 100mA | CW 50mA | 9
28 // 0xA | 1010 | RGB 110mA | CW 55mA | 10
29 // 0xB | 1011 | RGB 120mA | CW 60mA | 11
30 // 0xC | 1100 | RGB 130mA | CW 65mA | 12
31 // 0xD | 1101 | RGB 140mA | CW 70mA | 13
32 // 0xE | 1110 | RGB 150mA | CW 75mA | 14
33 // 0xF | 1111 | RGB 160mA | CW 80mA | 15
34 
36  if (!this->update_)
37  return;
38 
39  uint8_t data[12];
40  if (this->pwm_amounts_[0] == 0 && this->pwm_amounts_[1] == 0 && this->pwm_amounts_[2] == 0 &&
41  this->pwm_amounts_[3] == 0 && this->pwm_amounts_[4] == 0) {
42  for (int i = 1; i < 12; i++)
43  data[i] = 0;
44  // First turn all channels off
45  data[0] = this->model_id_ + SM10BIT_ADDR_START_5CH;
46  this->write_buffer_(data, 12);
47  // Then sleep
48  data[0] = this->model_id_ + SM10BIT_ADDR_STANDBY;
49  this->write_buffer_(data, 12);
50  } else if (this->pwm_amounts_[0] == 0 && this->pwm_amounts_[1] == 0 && this->pwm_amounts_[2] == 0 &&
51  (this->pwm_amounts_[3] > 0 || this->pwm_amounts_[4] > 0)) {
52  // Only data on white channels
53  data[0] = this->model_id_ + SM10BIT_ADDR_START_2CH;
54  data[1] = 0 << 4 | this->max_power_white_channels_;
55  for (int i = 2, j = 0; i < 12; i += 2, j++) {
56  data[i] = this->pwm_amounts_[j] >> 0x8;
57  data[i + 1] = this->pwm_amounts_[j] & 0xFF;
58  }
59  this->write_buffer_(data, 12);
60  } else if ((this->pwm_amounts_[0] > 0 || this->pwm_amounts_[1] > 0 || this->pwm_amounts_[2] > 0) &&
61  this->pwm_amounts_[3] == 0 && this->pwm_amounts_[4] == 0) {
62  // Only data on RGB channels
63  data[0] = this->model_id_ + SM10BIT_ADDR_START_3CH;
64  data[1] = this->max_power_color_channels_ << 4 | 0;
65  for (int i = 2, j = 0; i < 12; i += 2, j++) {
66  data[i] = this->pwm_amounts_[j] >> 0x8;
67  data[i + 1] = this->pwm_amounts_[j] & 0xFF;
68  }
69  this->write_buffer_(data, 12);
70  } else {
71  // All channels
72  data[0] = this->model_id_ + SM10BIT_ADDR_START_5CH;
73  data[1] = this->max_power_color_channels_ << 4 | this->max_power_white_channels_;
74  for (int i = 2, j = 0; i < 12; i += 2, j++) {
75  data[i] = this->pwm_amounts_[j] >> 0x8;
76  data[i + 1] = this->pwm_amounts_[j] & 0xFF;
77  }
78  this->write_buffer_(data, 12);
79  }
80 
81  this->update_ = false;
82 }
83 
84 void Sm10BitBase::set_channel_value_(uint8_t channel, uint16_t value) {
85  if (this->pwm_amounts_[channel] != value) {
86  this->update_ = true;
87  this->update_channel_ = channel;
88  }
89  this->pwm_amounts_[channel] = value;
90 }
91 void Sm10BitBase::write_bit_(bool value) {
92  this->data_pin_->digital_write(value);
93  delayMicroseconds(SM10BIT_DELAY);
94  this->clock_pin_->digital_write(true);
95  delayMicroseconds(SM10BIT_DELAY);
96  this->clock_pin_->digital_write(false);
97  delayMicroseconds(SM10BIT_DELAY);
98 }
99 
100 void Sm10BitBase::write_byte_(uint8_t data) {
101  for (uint8_t mask = 0x80; mask; mask >>= 1) {
102  this->write_bit_(data & mask);
103  }
104 
105  // ack bit
107  this->clock_pin_->digital_write(true);
108  delayMicroseconds(SM10BIT_DELAY);
109  this->clock_pin_->digital_write(false);
110  delayMicroseconds(SM10BIT_DELAY);
112 }
113 
114 void Sm10BitBase::write_buffer_(uint8_t *buffer, uint8_t size) {
115  this->data_pin_->digital_write(false);
116  delayMicroseconds(SM10BIT_DELAY);
117  this->clock_pin_->digital_write(false);
118  delayMicroseconds(SM10BIT_DELAY);
119 
120  for (uint32_t i = 0; i < size; i++) {
121  this->write_byte_(buffer[i]);
122  }
123 
124  this->clock_pin_->digital_write(true);
125  delayMicroseconds(SM10BIT_DELAY);
126  this->data_pin_->digital_write(true);
127  delayMicroseconds(SM10BIT_DELAY);
128 }
129 
130 } // namespace sm10bit_base
131 } // namespace esphome
virtual void digital_write(bool value)=0
virtual void pin_mode(gpio::Flags flags)=0
std::vector< uint16_t > pwm_amounts_
Definition: sm10bit_base.h:58
void write_buffer_(uint8_t *buffer, uint8_t size)
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void set_channel_value_(uint8_t channel, uint16_t value)