From: SnickerSun Date: Fri, 29 Mar 2024 09:54:05 +0000 (+0800) Subject: 添加PCB NTC，Battery NTC 驱动 温度值的计算 X-Git-Tag: release_V1.2.70_20241020_135402~1241^2~13^2 X-Git-Url: http://git.snicker.com.cn/img/static/gitweb.css?a=commitdiff_plain;h=e35173973ca5af77d259675c74fb54195fbaa6ee;p=mirrors%2FFD230.git 添加PCB NTC，Battery NTC 驱动 温度值的计算 --- diff --git a/code/sdk/application/battery/service/battery_driver.cpp b/code/sdk/application/battery/service/battery_driver.cpp index 40ec00102..5fc6329e7 100644 --- a/code/sdk/application/battery/service/battery_driver.cpp +++ b/code/sdk/application/battery/service/battery_driver.cpp @@ -77,11 +77,158 @@ typedef enum { #define adc_trans_sytick_to_voltage_without_auto_scan(x) ((float)(((float)(x) * 18) / 40960)) #define adc_trans_sytick_to_voltage(x) ((float)(((float)(x) * 17) / 40960)) #define adc_trans_sytick_to_voltage_diff(x) ((float)(((float)((x) - 2048) * 17) / 20480)) -#define adc_trans_systick_to_battery_ntc(x) ((float)(((float)(x) * 18) / 40960)) -#define adc_trans_systick_to_pcb_ntc(x) ((float)(((float)(x) * 17) / 40960)) -#define adc_trans_systick_to_battery_voltage(x) ((float)((float)(x) / 749.75838433852f)) + + +float pcb_ntc_map[][2]={ +{27.2186,0}, +{26.076,1}, +{24.9877,2}, +{23.9509,3}, +{22.9629,4}, +{22.0211,5}, +{21.123,6}, +{20.2666,7}, +{19.4495,8}, +{18.6698,9}, +{17.9255,10}, +{17.2139,11}, +{16.5344,12}, +{15.8856,13}, +{15.2658,14}, +{14.6735,15}, +{14.1075,16}, +{13.5664,17}, +{13.0489,18}, +{12.554,19}, +{12.0805,20}, +{11.6281,21}, +{11.1947,22}, +{10.7795,23}, +{10.3815,24}, +{10,25}, +{9.6342,26}, +{9.2835,27}, +{8.947,28}, +{8.6242,29}, +{8.3145,30}, +{8.0181,31}, +{7.7337,32}, +{7.4609,33}, +{7.1991,34}, +{6.9479,35}, +{6.7067,36}, +{6.4751,37}, +{6.2526,38}, +{6.039,39}, +{5.8336,40}, +{5.6357,41}, +{5.4454,42}, +{5.2623,43}, +{5.0863,44}, +{4.9169,45}, +{4.7539,46}, +{4.5971,47}, +{4.4461,48}, +{4.3008,49}, +{4.1609,50}, +{4.0262,51}, +{3.8964,52}, +{3.7714,53}, +{3.651,54}, +{3.535,55}, +{3.4231,56}, +{3.3152,57}, +{3.2113,58}, +{3.111,59}, +{3.0143,60}, +{2.9224,61}, +{2.8337,62}, +{2.7482,63}, +{2.6657,64}, +{2.5861,65}, +{2.5093,66}, +{2.4351,67}, +{2.3635,68}, +{2.2943,69}, +{2.2275,70} +}; +float battery_ntc_map[][2]={ + {27.8,0}, + {26.6,1}, + {25.46,2}, + {24.38,3}, + {23.35,4}, + {22.37,5}, + {21.44,6}, + {20.55,7}, + {19.7,8}, + {18.9,9}, + {18.13,10}, + {17.39,11}, + {16.69,12}, + {16.02,13}, + {15.39,14}, + {14.78,15}, + {14.2,16}, + {13.64,17}, + {13.11,18}, + {12.61,19}, + {12.12,20}, + {11.66,21}, + {11.22,22}, + {10.79,23}, + {10.39,24}, + {10,25}, + {9.63,26}, + {9.27,27}, + {8.93,28}, + {8.61,29}, + {8.3,30}, + {8,31}, + {7.71,32}, + {7.43,33}, + {7.17,34}, + {6.92,35}, + {6.67,36}, + {6.44,37}, + {6.22,38}, + {6,39}, + {5.8,40}, + {5.6,41}, + {5.41,42}, + {5.23,43}, + {5.05,44}, + {4.88,45}, + {4.72,46}, + {4.57,47}, + {4.42,48}, + {4.27,49}, + {4.13,50}, + {4,51}, + {3.87,52}, + {3.75,53}, + {3.63,54}, + {3.51,55}, + {3.4,56}, + {3.3,57}, + {3.19,58}, + {3.09,59}, + {3,60}, + {2.91,61}, + {2.82,62}, + {2.73,63}, + {2.65,64}, + {2.57,65}, + {2.49,66}, + {2.42,67}, + {2.35,68}, + {2.28,69}, + {2.21,70} +}; + + #define batteryservice_VOLTAGE_MAX (4.2f) -#define batteryservice_VOLTAGE_MIN (3.2f) +#define batteryservice_VOLTAGE_MIN (3.3f) @@ -96,7 +243,6 @@ static uint32_t g_adc_sample_stick = 0; - static battery_info_t current_battery_info={0}; battery_info_t *get_current_battery_info(void) @@ -104,6 +250,13 @@ battery_info_t *get_current_battery_info(void) return ¤t_battery_info; } +void dump_battery_info(void) +{ + printf("battery_voltage = %.02f\n",current_battery_info.battery_voltage); + printf("battery_ntc_temp = %.02f\n",current_battery_info.battery_ntc_temp); + printf("pcb_ntc_temp = %.02f\n",current_battery_info.pcb_ntc_temp); +} + static uint32_t adc_get_sample_times(void) { return g_adc_sample_times; @@ -131,6 +284,80 @@ static float adc_stick_transfer_voltage(uint16_t stick, adc_channel_t channel) return adc_trans_sytick_to_voltage_without_auto_scan(stick); } +/** + * 分压关系: 2M+1M两个电阻串联,分压 VBat , adc测量的电压为VBat的 1/3 + * 测量算得大致系数为 mV/stick = 1000/749.75838433852f +*/ +static float adc_trans_systick_to_battery_voltage(int sticks) +{ +// #define adc_trans_systick_to_battery_voltage(x) ((float)((float)(x) / 749.75838433852f)) + float ret = ((float)((float)(sticks) / 749.75838433852f)); + return ret; +} + +/** + * 分压关系 温敏电阻与10K电阻串联,共同分压1800mv + * 根据测量,计算 mV/stick = 0.45283089 + * 反算 温敏电阻阻值 = (0.45283089 * sticks * 10)/(1800 - 0.45283089 * sticks ) + * 查表反推温度. + * 另外,不考虑电阻值温度map,直接换算数学公式可为 ((float)(((float)(sticks) * (-0.02681f)) + 79.14f)); + * 需要额外验证 +*/ +static float adc_trans_systick_to_pcb_ntc(int sticks) +{ +// #define adc_trans_systick_to_pcb_ntc(x) ((float)(((float)(x) * (-0.02681f)) + 79.14f)) + float ret = ((float)(((float)(sticks) * (-0.02681f)) + 79.14f)); + + float r_value = (0.45283089f * sticks * 10.0f)/(1800.0f - 0.45283089f * sticks ); + int map_len = sizeof(pcb_ntc_map)/sizeof(pcb_ntc_map[0]); + float temp_value = 0.0f; + for (int i =0;i pcb_ntc_map[i+1][0] ) + { + //阻值 前大后小 + float r_div = ( pcb_ntc_map[i][0] - r_value)/(pcb_ntc_map[i][0] - pcb_ntc_map[i+1][0]); + //温度 前小后大 + temp_value = pcb_ntc_map[i][1] + (pcb_ntc_map[i+1][1] - pcb_ntc_map[i][1]) * r_div ; + break; + } + } + // osal_printk("pcb ntc temp value1 %.4f value2 %.4f\r\n",ret,temp_value); + return temp_value; +} +/** + * 分压关系 温敏电阻与10K电阻串联,共同分压1800mv + * 根据测量,计算 mV/stick = 0.45283089 + * 反算 温敏电阻阻值 = (0.45283089 * sticks * 10)/(1800 - 0.45283089 * sticks ) + * 查表反推温度. + * +*/ +static float adc_trans_systick_to_battery_ntc(int sticks) +{ +// #define float adc_trans_systick_to_battery_ntc(x) ((float)(((float)(x) * (-0.02681f)) + 79.14f)) //-0.02681 x + 79.14 + float ret = ((float)(((float)(sticks) * (-0.02681f)) + 79.14f)); + + float r_value = (0.45283089f * sticks * 10.0f)/(1800.0f - 0.45283089f * sticks ); + int map_len = sizeof(battery_ntc_map)/sizeof(battery_ntc_map[0]); + float temp_value = 0.0f; + for (int i =0;i battery_ntc_map[i+1][0] ) + { + //阻值 前大后小 + float r_div = ( battery_ntc_map[i][0] - r_value)/(battery_ntc_map[i][0] - battery_ntc_map[i+1][0]); + //温度 前小后大 + temp_value = battery_ntc_map[i][1] + (battery_ntc_map[i+1][1] - battery_ntc_map[i][1]) * r_div ; + break; + } + } + // osal_printk("battery ntc temp value1 %.4f value2 %.4f\r\n",ret,temp_value); + return temp_value; +} + + static bool adc_get_sample_result(float *voltage, uint8_t channel) { uint32_t sample_number = 0; @@ -185,7 +412,7 @@ static bool adc_get_sample_result(float *voltage, uint8_t channel) *voltage = adc_trans_systick_to_battery_ntc(stick); else if (channel == 5) *voltage = adc_trans_systick_to_pcb_ntc(stick); - // osal_printk("channel = %d , tick = %d , voltage = %.04f.\r\n", channel,stick,*voltage); + // osal_printk("channel = %d , stick = %d , voltage = %.04f.\r\n", channel,stick,*voltage); UNUSED(discard_number); return true; diff --git a/code/sdk/application/battery/service/battery_service.cpp b/code/sdk/application/battery/service/battery_service.cpp index 7afeecb4d..42c3ffc50 100644 --- a/code/sdk/application/battery/service/battery_service.cpp +++ b/code/sdk/application/battery/service/battery_service.cpp @@ -358,6 +358,7 @@ void uapi_battery_create_queue(void) } } +#define BATTERY_TASK_SIZE 0x1C00 errcode_t uapi_battery_init(void) { @@ -367,8 +368,8 @@ errcode_t uapi_battery_init(void) PRINT("uapi_battery_init !\r\n"); taskcfg.create_queue_handle = uapi_battery_create_queue; taskcfg.attr.name="battery_service"; - taskcfg.attr.priority = TASK_PRIORITY_APP; - taskcfg.attr.stack_size = APP_BOARD_TASK_SIZE; + taskcfg.attr.priority = osPriorityBelowNormal7; + taskcfg.attr.stack_size = BATTERY_TASK_SIZE; taskcfg.func = battery_check_task; taskcfg.use_mem = USE_EXTEND_MEM;