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--- icore4t_8 [2020/02/19 17:00]
zgf 创建
+++ icore4t_8 [2022/03/22 10:39] (当前版本)
sean
@@ 行 2: / 行 2: @@
 |技术支持电话|**0379-69926675-801**|||
 |技术支持邮件|Gingko@vip.163.com|||
-|技术论坛|http://www.eeschool.org|||
 ^  版本  ^  日期  ^  作者  ^  修改内容  ^
 |  V1.0  |  2019-02-19  |  gingko  |  初次建立  |
@@ 行 101: / 行 100: @@
   * 所有 DC-DC 和 LDO 都有负载监测和限流功能，当负载电流超过其驱动能力时，各输出电压都会下降，以保护内部电路。 4 个 DC-DC 输出电压低于设定电压的 85%时，AXP152 自动关机。
 管脚定义：
+{{ :icore4t:icore4t_arm_hal_8_1.png?direct |}}
 原理图如下所示：
+{{ :icore4t:icore4t_arm_hal_8_2.png?direct |}}
 === 2.AXP152读写时序图 ===
 单次读写：
+{{ :icore4t:icore4t_arm_hal_8_3.png?direct |}}
-	多次读写：
+多次读写：
+{{ :icore4t:icore4t_arm_hal_8_4.png?direct |}}
 === 3.AXP152部分寄存器介绍 ===
+{{ :icore4t:icore4t_arm_hal_8_5.png?direct |}}
+{{ :icore4t:icore4t_arm_hal_8_6.png?direct |}}
+{{ :icore4t:icore4t_arm_hal_8_7.png?direct |}}
+{{ :icore4t:icore4t_arm_hal_8_8.png?direct |}}
+{{ :icore4t:icore4t_arm_hal_8_9.png?direct |}}
+{{ :icore4t:icore4t_arm_hal_8_10.png?direct |}}
+{{ :icore4t:icore4t_arm_hal_8_11.png?direct |}}
 ==== 四、 实验程序 ====
@@ 行 124: / 行 122: @@
 === 1. 主函数 ===
 <code c>
+int main(void)
+{
+  HAL_Init();
+  SystemClock_Config();
+  i2c.initialize();
+  axp152.initialize();
+  axp152.set_dcdc1(3500);//[ARM & FPGA BK1/2/6 &OTHER]
+  axp152.set_dcdc2(1200);//[FPGA INT & PLL D]
+  axp152.set_aldo1(2500);//[FPGA PLL A]
+  axp152.set_dcdc4(3300);//[POWER_OUTPUT]
+  axp152.set_dcdc3(3300);//[FPGA BK4][Adjustable]
+  axp152.set_aldo2(3300);//[FPGA BK3][Adjustable]
+  axp152.set_dldo1(3300);//[FPGA BK7][Adjustable]
+  axp152.set_dldo2(3300);//[FPGA BK5][Adjustable]
+  MX_GPIO_Init();
+  while (1)
+  {
+  }
+}
 </code>
 === 2. AXP152常量定义 ===
 <code c>
+//定义常量的寄存器地址
+#define AXP152_CHIP_VERSION         0x03
+#define AXP152_DCDC1_VOLTAGE        0x26  //DC-DC1 电压设置寄存器
+#define AXP152_DCDC2_VOLTAGE        0x23  //DC-DC2 电压设置寄存器
+#define AXP152_DCDC3_VOLTAGE        0x27  //DC-DC3 电压设置寄存器
+#define AXP152_DCDC4_VOLTAGE        0x2B  //DC-DC4 电压设置寄存器
+#define AXP152_DLDO1_VOLTAGE        0x29  //DLDO1 电压设置寄存器
+#define AXP152_DLDO2_VOLTAGE        0x2A  //DLDO2 电压设置寄存器
+#define AXP152_ALDO1_ALD02_VOLTAGE  0x28  //ALDO1/2 电压设置寄存器
+#define AXP152_SHUTDOWN             0x32  //关机和关机时序控制寄存器
+#define AXP152_POWEROFF     (1 << 7)
+#define AXP152_I2C_ADDR             0x60  //I2C设备地址
 </code>
 === 3.AXP152各路输出电压设定函数 ===
 <code c>
+//axp152_mvolt_to_target 电压范围调整函数
+static unsigned char axp152_mvolt_to_target(int mvolt, int min, int max, int div)
+{
+  if (mvolt < min)
+    mvolt = min;
+  else if (mvolt > max)
+    mvolt = max;
+  return (mvolt - min) / div;
+//set_dcdc1 设定dcdc1输出电压
+int set_dcdc1(unsigned int mvolt)
+{
+  unsigned char target = axp152_mvolt_to_target(mvolt, 1700, 3500, 100);
+  if(mvolt >= 2400 || mvolt <= 2800)target = target - 2;
+  if(mvolt >= 3000 || mvolt <= 3500)target = target - 3;
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_DCDC1_VOLTAGE,&target,1);
+}
+//set_dcdc2 设定dcdc2输出电压
+int set_dcdc2(unsigned int mvolt)
+{
+  unsigned char target = axp152_mvolt_to_target(mvolt, 700, 2275, 25);
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_DCDC2_VOLTAGE,&target,1);
+}
+//set_dcdc3 设定dcdc3输出电压
+int set_dcdc3(unsigned int mvolt)
+{
+  unsigned char target = axp152_mvolt_to_target(mvolt, 700, 3500, 50);
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_DCDC3_VOLTAGE,&target,1);
+}
+//set_dcdc4 设定dcdc4输出电压
+int set_dcdc4(unsigned int mvolt)
+{
+  unsigned char target = axp152_mvolt_to_target(mvolt, 700, 3500, 25);
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_DCDC4_VOLTAGE,&target,1);
+}
+//set_dldo1 设定dldo1输出电压
+int set_dldo1(unsigned int mvolt)
+{
+  unsigned char target = axp152_mvolt_to_target(mvolt, 700, 3500, 100);
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_DLDO1_VOLTAGE,&target,1);
+}
+//set_dldo2 设定dldo2输出电压
+int set_dldo2(unsigned int mvolt)
+{
+  unsigned char target = axp152_mvolt_to_target(mvolt, 700, 3500, 100);
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_DLDO2_VOLTAGE,&target,1);
+}
+//set_aldo1 设定aldo1输出电压
+int set_aldo1(unsigned int mvolt)
+{
+  unsigned char data;
+  unsigned char target;
+  if(mvolt >= 1200 && mvolt <= 2000){
+    target = axp152_mvolt_to_target(mvolt, 1200, 2000, 100);
+  }else if(mvolt == 2500){
+    target = 0x09;
+  }else if(mvolt == 2700){
+    target = 0x0A;
+  }else if(mvolt == 2800){
+    target = 0x0B;
+  }else if(mvolt >= 3000 || mvolt <= 3300){
+    target = axp152_mvolt_to_target(mvolt, 3000, 3300, 100);
+    target += 0x0C;
+  }
+  i2c.read_nbyte(AXP152_I2C_ADDR,AXP152_ALDO1_ALD02_VOLTAGE,&data,1);
+  data &= 0x0F;
+  target = target << 4;
+target &= 0xF0;
+  target = data | target;
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_ALDO1_ALD02_VOLTAGE,&target,1);
+}
+//set_aldo2 设定aldo2输出电压
+int set_aldo2(unsigned int mvolt)
+{
+  unsigned char data;
+  unsigned char target;
+  if(mvolt >= 1200 && mvolt <= 2000){
+    target = axp152_mvolt_to_target(mvolt, 1200, 2000, 100);
+  }else if(mvolt == 2500){
+    target = 0x09;
+  }else if(mvolt == 2700){
+    target = 0x0A;
+  }else if(mvolt == 2800){
+    target = 0x0B;
+  }else if(mvolt >= 3000 || mvolt <= 3300){
+    target = axp152_mvolt_to_target(mvolt, 3000, 3300, 100);
+    target += 0x0C;
+  }
+  i2c.read_nbyte(AXP152_I2C_ADDR,AXP152_ALDO1_ALD02_VOLTAGE,&data,1);
+  data &= 0xF0;
+  target = target & 0x0F;
+  target = data | target;
+  return i2c.write_nbyte(AXP152_I2C_ADDR,AXP152_ALDO1_ALD02_VOLTAGE,&target,1);
+}
 </code>

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