单片机控制热敏打印机源码

以下是单片机控制热敏打印机的一个简单示例代码，使用的是STM32单片机和SPI通信协议，仅供参考。

#include "stm32f10x.h"
#include "stm32f10x_spi.h"

#define PRINTER_GPIO_RCC  RCC_APB2Periph_GPIOA
#define PRINTER_SPI_RCC   RCC_APB2Periph_SPI1

#define PRINTER_SPI       SPI1
#define PRINTER_CS_PIN    GPIO_Pin_4
#define PRINTER_CLK_PIN   GPIO_Pin_5
#define PRINTER_MISO_PIN  GPIO_Pin_6
#define PRINTER_MOSI_PIN  GPIO_Pin_7

void printer_init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  SPI_InitTypeDef  SPI_InitStructure;

  // Enable GPIO and SPI clock
  RCC_APB2PeriphClockCmd(PRINTER_GPIO_RCC | PRINTER_SPI_RCC, ENABLE);

  // Configure GPIO pins
  GPIO_InitStructure.GPIO_Pin = PRINTER_CS_PIN | PRINTER_CLK_PIN | PRINTER_MOSI_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = PRINTER_MISO_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  // Configure SPI
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(PRINTER_SPI, &SPI_InitStructure);

  SPI_Cmd(PRINTER_SPI, ENABLE);
}

void printer_send_data(uint8_t data)
{
  while (SPI_I2S_GetFlagStatus(PRINTER_SPI, SPI_I2S_FLAG_TXE) == RESET);
  SPI_I2S_SendData(PRINTER_SPI, data);
  while (SPI_I2S_GetFlagStatus(PRINTER_SPI, SPI_I2S_FLAG_RXNE) == RESET);
  SPI_I2S_ReceiveData(PRINTER_SPI);
}

void printer_print(uint8_t *data, uint16_t len)
{
  GPIO_ResetBits(GPIOA, PRINTER_CS_PIN);

  // Send data
  for (uint16_t i = 0; i < len; ++i)
  {
    printer_send_data(data[i]);
  }

  GPIO_SetBits(GPIOA, PRINTER_CS_PIN);
}

int main(void)
{
  uint8_t print_data[] = {0x1B, 0x40, 'H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', 0x0A, 0x0D};

  // Initialize printer
  printer_init();

  // Print data
  printer_print(print_data, sizeof(print_data));

  while (1)
  {
    // Do nothing
  }
}

注意，这只是一个简单的示例代码，实际使用时需要根据具体的需求和热敏打印机的通信协议进行相应的修改和优化。