2 * Copyright (C) 2012-2015 Czech Technical University in Prague
4 * Created on: 28.2.2013
9 * This document contains proprietary information belonging to Czech
10 * Technical University in Prague. Passing on and copying of this
11 * document, and communication of its contents is not permitted
12 * without prior written authorization.
17 * This file contains command for reading adc port.
25 #include "drv/digital_io_def.h"
29 static double lsb2volts(unsigned lsb)
31 return ((double)lsb + 0.0)*2.5/4095*2;
36 * @brief Read values from ADC port
38 * @param[in] cmd_io Pointer to IO stack
39 * @param[in] des Pointer to command descriptor
40 * @param[in] param Parameters of command
41 * @return 0 when OK or error code lower than 0
43 int cmd_do_read_adc1_values(cmd_io_t *cmd_io, const struct cmd_des *des, char *param[])
45 uint32_t i, min, max; // Cycle control variable
48 if (param[1] == param[0] + 7) { /* Single pin variant */
49 if (sscanf(param[1], "%d", &min) != 1)
50 return -CMDERR_BADPAR;
57 max = rpp_port_get_pin_cnt(DIO_PORT_NAME_ADC)-1;
59 for (i = min; i <= max; i++) {
60 unsigned d = rpp_adc_get(i+1);
61 double v = lsb2volts(d);
62 rpp_sci_printf("ADC%-2d %4d lsb ~ %5.2f V\n", i, d, v);
67 int cmd_do_adc_watch(cmd_io_t *cmd_io, const struct cmd_des *des, char *param[])
71 rpp_sci_printf("ADC Inputs Test [0-15]:\r\n");
72 rpp_sci_printf("===============================================================================================\r\n");
74 for (i = 0; i < 16; i++)
75 rpp_sci_printf("%5d ", i);
78 // Calculate wait time in OS ticks
79 static const portTickType freq_ticks = 100 /* ms */ / portTICK_RATE_MS;
80 portTickType last_wake_time = xTaskGetTickCount();
82 while (cmd_io->getc(cmd_io) < 0) {
86 for (i = 0; i < 16; i++)
87 rpp_sci_printf("%5d ", rpp_adc_get(i+1));
88 rpp_sci_printf("lsb\n");
89 for (i = 0; i < 16; i++)
90 rpp_sci_printf("%5.2f ", lsb2volts(rpp_adc_get(i+1)));
91 rpp_sci_printf("V\r\033[A"); /* Cursor up */
94 vTaskDelayUntil(&last_wake_time, freq_ticks);
96 rpp_sci_printf("\n\n");
103 /** Descriptor of command for adc port reading */
104 cmd_des_t const cmd_des_read_adc1 = {
106 "adcread","Read values from ADC inputs",
107 "### Command syntax ###\n"
111 "### Description ###\n"
113 "This command reads values corresponding to analog voltages on ADC\n"
114 "inputs 0-15 and prints them as decimal numbers as well as converted to\n"
120 " ADC0 2332 lsb ~ 11.66 V\n"
121 " ADC1 2332 lsb ~ 11.66 V\n"
122 " ADC2 107 lsb ~ 0.54 V\n"
123 " ADC3 108 lsb ~ 0.54 V\n"
124 " ADC4 107 lsb ~ 0.54 V\n"
125 " ADC5 108 lsb ~ 0.54 V\n"
126 " ADC6 111 lsb ~ 0.56 V\n"
127 " ADC7 110 lsb ~ 0.55 V\n"
128 " ADC8 109 lsb ~ 0.55 V\n"
129 " ADC9 107 lsb ~ 0.54 V\n"
130 " ADC10 107 lsb ~ 0.54 V\n"
131 " ADC11 110 lsb ~ 0.55 V\n"
132 " ADC12 108 lsb ~ 0.54 V\n"
133 " ADC13 108 lsb ~ 0.54 V\n"
134 " ADC14 108 lsb ~ 0.54 V\n"
135 " ADC15 108 lsb ~ 0.54 V\n",
136 CMD_HANDLER(cmd_do_read_adc1_values), (void *)&cmd_list_adc
139 cmd_des_t const cmd_des_read_adc2 = {
141 "adcread*","Read a value from a single ADC input",
142 "### Command syntax ###\n"
146 "where `<PIN>` is a number in range 0 - 15.\n"
148 "### Description ###\n"
150 "This command reads the value corresponding to analog voltage on an ADC\n"
151 "input and prints it as decimal numbers as well as converted to Volts.\n"
156 " ADC1 2331 lsb ~ 11.66 V\n",
157 CMD_HANDLER(cmd_do_read_adc1_values), (void *)&cmd_list_adc
160 cmd_des_t const cmd_des_adcwatch = {
162 "adcwatch","Watch the values from ADC inputs",
163 "### Command syntax ###\n"
167 "### Description ###\n"
169 "This command reads values corresponding to analog voltages on ADC\n"
170 "inputs 0-15 10 times per second and prints them as decimal numbers (in\n"
171 "lsb units) as well as converted to Volts. The command is ended by any\n"
177 " ADC Inputs Test [0-15]:\n"
178 " =========================================================================================\n"
179 " 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15\n"
180 " 2331 107 108 106 107 110 110 109 107 107 110 109 109 109 109 lsb\n"
181 " 11.66 0.54 0.54 0.53 0.54 0.55 0.55 0.55 0.54 0.54 0.55 0.55 0.55 0.55 0.55 V\n",
182 CMD_HANDLER(cmd_do_adc_watch), (void *)&cmd_list_adc
185 /** List of commands for adc, defined as external */
186 cmd_des_t const *cmd_list_adc[] = {