46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
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#include "tmp117.h"
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#include "i2c.h"
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// <20><>ʼ<EFBFBD><CABC><EFBFBD>¶ȴ<C2B6><C8B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>ģʽ<C4A3><CABD>64<36><34>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>
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HAL_StatusTypeDef TMP117_Init(void)
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{
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// <20><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>ģʽ + AVG=64 (0x00A0)
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uint8_t config_data[2] = {0x00, 0xA0}; // <20><><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>ǰ
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return HAL_I2C_Mem_Write(&hi2c1, TMP117_ADDR << 1, TMP117_CONFIG_REG,
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I2C_MEMADD_SIZE_8BIT, config_data, 2, 100);
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}
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// <20>ӼĴ<D3BC><C4B4><EFBFBD><EFBFBD><EFBFBD>ȡ˫<C8A1>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD>
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HAL_StatusTypeDef TMP117_Read(uint8_t reg, uint8_t *buffer) {
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return HAL_I2C_Mem_Read(&hi2c1, TMP117_ADDR << 1, reg,
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I2C_MEMADD_SIZE_8BIT, buffer, 2, 100);
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}
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// <20><>ȡ<EFBFBD>¶<EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>棩
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HAL_StatusTypeDef TMP117_Get_Temp(float *temp)
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{
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uint8_t raw_data[2] = {0};
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int16_t temp_raw;
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if (HAL_OK == TMP117_Read(TMP117_TEMP_REG, raw_data)) {
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temp_raw = (raw_data[0] << 8) | raw_data[1];
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*temp = temp_raw * 0.0078125f;
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}
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else
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{
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*temp = 0;
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return HAL_ERROR;
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}
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if(*temp <= -60)
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{
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*temp = -60;
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}
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if(*temp >= 150)
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{
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*temp = 150;
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}
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return HAL_OK;
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}
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