yu.dong | 638a4a9 | 2023-10-18 00:14:06 -0700 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | #include <sc_bsp.h> |
| 5 | #include <errno.h> |
yu.dong | db55df5 | 2025-05-06 01:40:47 -0700 | [diff] [blame^] | 6 | #include <fcntl.h> |
| 7 | #include <unistd.h> |
yu.dong | 638a4a9 | 2023-10-18 00:14:06 -0700 | [diff] [blame] | 8 | #include "lynq-adc.h" |
| 9 | #include "liblog/lynq_deflog.h" |
| 10 | |
| 11 | #ifdef __cplusplus |
| 12 | extern "C" { |
| 13 | #endif |
| 14 | |
| 15 | #define ADC0_NODES "/sys/kernel/debug/pmu_zx29/adc0" |
| 16 | #define ADC1_NODES "/sys/kernel/debug/pmu_zx29/adc1" |
| 17 | #define ADC2_NODES "/sys/kernel/debug/pmu_zx29/adc2" |
| 18 | |
yu.dong | db55df5 | 2025-05-06 01:40:47 -0700 | [diff] [blame^] | 19 | static int adc_count_initialized = 0; |
| 20 | |
yu.dong | 638a4a9 | 2023-10-18 00:14:06 -0700 | [diff] [blame] | 21 | /******************************************************************** |
| 22 | * @brief: qser_adc_show, function to read ADC value from specific channel |
| 23 | * @param qadc [IN]: ADC_CHANNEL_E, the ADC channel to read from |
| 24 | * @return : int, the read ADC value, or error code if failed |
| 25 | * @todo: NA |
| 26 | * @see: NA |
| 27 | * @warning: NA |
| 28 | *********************************************************************/ |
| 29 | int qser_adc_show(ADC_CHANNEL_E qadc) |
| 30 | { |
| 31 | int adc_value; |
xf.li | f8024dc | 2024-09-26 03:10:16 -0700 | [diff] [blame] | 32 | char cmd_ret[1024]={0}; |
| 33 | FILE *fd; |
yu.dong | db55df5 | 2025-05-06 01:40:47 -0700 | [diff] [blame^] | 34 | |
| 35 | if (!adc_count_initialized) { |
| 36 | int fd_init; |
| 37 | if ((fd_init = open("/sys/kernel/debug/pmu_zx29/set_adc_count", O_WRONLY)) != -1) { |
| 38 | ssize_t ret = write(fd_init, "1", 1); |
| 39 | close(fd_init); |
| 40 | adc_count_initialized = 1; |
| 41 | LYDBGLOG("ADC count initialized, write returned: %zd bytes\n", ret); |
| 42 | } else { |
| 43 | LYERRLOG("Failed to initialize ADC count: %s\n", strerror(errno)); |
| 44 | } |
| 45 | } |
| 46 | |
yu.dong | 638a4a9 | 2023-10-18 00:14:06 -0700 | [diff] [blame] | 47 | switch(qadc) |
| 48 | { |
xf.li | f8024dc | 2024-09-26 03:10:16 -0700 | [diff] [blame] | 49 | case QADC_NONE: |
| 50 | { |
| 51 | LYERRLOG("function %s line %d\n", __FUNCTION__, __LINE__); |
| 52 | return 0; |
| 53 | } |
| 54 | case ADC0: |
| 55 | { |
| 56 | LYDBGLOG("function %s line %d\n", __FUNCTION__, __LINE__); |
| 57 | fd = fopen(ADC0_NODES, "r"); |
| 58 | if(fd == NULL) |
| 59 | { |
| 60 | LYERRLOG("fopen error: %s", strerror(errno)); |
| 61 | return -1; |
| 62 | } |
| 63 | if(fgets(cmd_ret, sizeof(cmd_ret), fd) == NULL) |
| 64 | { |
| 65 | LYERRLOG("fgets error!!!\n"); |
| 66 | fclose(fd); |
| 67 | return -1; |
| 68 | } |
| 69 | fclose(fd); |
| 70 | break; |
| 71 | } |
| 72 | case ADC1: |
| 73 | { |
| 74 | LYDBGLOG("function %s line %d\n", __FUNCTION__, __LINE__); |
| 75 | fd = fopen(ADC1_NODES, "r"); |
| 76 | if(fd == NULL) |
| 77 | { |
| 78 | LYERRLOG("fopen error: %s", strerror(errno)); |
| 79 | return -1; |
| 80 | } |
| 81 | if(fgets(cmd_ret, sizeof(cmd_ret), fd) == NULL) |
| 82 | { |
| 83 | LYERRLOG("fgets error!!!\n"); |
| 84 | fclose(fd); |
| 85 | return -1; |
| 86 | } |
| 87 | fclose(fd); |
| 88 | break; |
| 89 | } |
| 90 | case ADC2: |
| 91 | { |
| 92 | LYDBGLOG("function %s line %d\n", __FUNCTION__, __LINE__); |
| 93 | fd = fopen(ADC2_NODES, "r"); |
| 94 | if(fd == NULL) |
| 95 | { |
| 96 | LYERRLOG("fopen error: %s", strerror(errno)); |
| 97 | return -1; |
| 98 | } |
| 99 | if(fgets(cmd_ret, sizeof(cmd_ret), fd) == NULL) |
| 100 | { |
| 101 | LYERRLOG("fgets error!!!\n"); |
| 102 | fclose(fd); |
| 103 | return -1; |
| 104 | } |
| 105 | fclose(fd); |
| 106 | break; |
| 107 | } |
| 108 | default: |
| 109 | { |
| 110 | LYERRLOG("input error\n"); |
| 111 | return -1; |
| 112 | } |
yu.dong | 638a4a9 | 2023-10-18 00:14:06 -0700 | [diff] [blame] | 113 | } |
xf.li | f8024dc | 2024-09-26 03:10:16 -0700 | [diff] [blame] | 114 | |
yu.dong | 638a4a9 | 2023-10-18 00:14:06 -0700 | [diff] [blame] | 115 | adc_value = atoi(cmd_ret); |
| 116 | if (adc_value < 0 || adc_value > 12000) |
| 117 | { |
| 118 | LYERRLOG("bad adc value %s!", cmd_ret); |
| 119 | return -1; |
| 120 | } |
| 121 | return adc_value; |
| 122 | } |
| 123 | |
| 124 | DEFINE_LYNQ_LIB_LOG(LYNQ_ADC) |
| 125 | |
| 126 | #ifdef __cplusplus |
| 127 | } |
| 128 | #endif |
| 129 | |