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9873d18298
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0cdb811d40
@ -1,234 +0,0 @@ |
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//
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// Created by MightyPork on 2017/11/25.
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//
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#include "comm/messages.h" |
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#include "unit_base.h" |
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#include "unit_pin.h" |
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/** Private data structure */ |
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struct priv { |
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char port_name; |
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uint8_t pin_number; |
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bool output; |
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bool pull_up; |
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bool open_drain; |
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uint32_t ll_pin; |
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GPIO_TypeDef *port; |
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}; |
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// ------------------------------------------------------------------------
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/** Load from a binary buffer stored in Flash */ |
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static void Pin_loadBinary(Unit *unit, PayloadParser *pp) |
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{ |
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struct priv *priv = unit->data; |
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priv->port_name = pp_char(pp); |
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priv->pin_number = pp_u8(pp); |
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priv->output = pp_bool(pp); |
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priv->pull_up = pp_bool(pp); |
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priv->open_drain = pp_bool(pp); |
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} |
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/** Write to a binary buffer for storing in Flash */ |
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static void Pin_writeBinary(Unit *unit, PayloadBuilder *pb) |
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{ |
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struct priv *priv = unit->data; |
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pb_char(pb, priv->port_name); |
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pb_u8(pb, priv->pin_number); |
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pb_bool(pb, priv->output); |
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pb_bool(pb, priv->pull_up); |
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pb_bool(pb, priv->open_drain); |
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} |
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// ------------------------------------------------------------------------
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/** Parse a key-value pair from the INI file */ |
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static bool Pin_loadIni(Unit *unit, const char *key, const char *value) |
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{ |
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bool suc = true; |
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struct priv *priv = unit->data; |
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if (streq(key, "pin")) { |
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suc = parse_pin(value, &priv->port_name, &priv->pin_number); |
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} |
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else if (streq(key, "dir")) { |
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priv->output = str_parse_01(value, "IN", "OUT", &suc); |
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} |
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else if (streq(key, "pull")) { |
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priv->pull_up = str_parse_01(value, "DOWN", "UP", &suc); |
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} |
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else if (streq(key, "opendrain")) { |
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priv->open_drain = str_parse_yn(value, &suc); |
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} else { |
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return false; |
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} |
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return suc; |
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} |
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/** Generate INI file section for the unit */ |
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static void Pin_writeIni(Unit *unit, IniWriter *iw) |
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{ |
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struct priv *priv = unit->data; |
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iw_comment(iw, "Physical pin"); |
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iw_entry(iw, "pin", "%c%d", priv->port_name, priv->pin_number); |
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iw_comment(iw, "Direction (IN, OUT)"); |
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iw_entry(iw, "dir", "%s", str_01(priv->output, "IN", "OUT")); |
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iw_comment(iw, "Pull resistor, only for input (UP, DOWN)"); |
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iw_entry(iw, "pull", "%s", str_01(priv->pull_up, "DOWN", "UP")); |
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iw_comment(iw, "Open drain, only for output (Y, N)"); |
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iw_entry(iw, "opendrain", "%s", str_yn(priv->open_drain)); |
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} |
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// ------------------------------------------------------------------------
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/** Allocate data structure and set defaults */ |
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static bool Pin_preInit(Unit *unit) |
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{ |
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bool suc = true; |
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struct priv *priv = unit->data = calloc_ck(1, sizeof(struct priv), &suc); |
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CHECK_SUC(); |
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// some defaults
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priv->pin_number = 0; |
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priv->port_name = 'A'; |
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priv->output = true; |
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priv->open_drain = false; |
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priv->pull_up = false; |
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return true; |
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} |
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/** Finalize unit set-up */ |
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static bool Pin_init(Unit *unit) |
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{ |
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bool suc = true; |
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struct priv *priv = unit->data; |
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// --- Parse config ---
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priv->ll_pin = pin2ll(priv->pin_number, &suc); |
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priv->port = port2periph(priv->port_name, &suc); |
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Resource rsc = pin2resource(priv->port_name, priv->pin_number, &suc); |
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if (!suc) { |
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unit->status = E_BAD_CONFIG; |
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return false; |
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} |
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// --- Claim resources ---
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if (!rsc_claim(unit, rsc)) return false; |
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// --- Init hardware ---
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LL_GPIO_SetPinMode(priv->port, priv->ll_pin, |
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priv->output ? LL_GPIO_MODE_OUTPUT : LL_GPIO_MODE_INPUT); |
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LL_GPIO_SetPinOutputType(priv->port, priv->ll_pin, |
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priv->open_drain ? LL_GPIO_OUTPUT_OPENDRAIN : LL_GPIO_OUTPUT_PUSHPULL); |
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LL_GPIO_SetPinPull(priv->port, priv->ll_pin, |
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priv->pull_up ? LL_GPIO_PULL_UP : LL_GPIO_PULL_DOWN); |
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LL_GPIO_SetPinSpeed(priv->port, priv->ll_pin, |
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LL_GPIO_SPEED_FREQ_HIGH); |
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return true; |
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} |
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/** Tear down the unit */ |
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static void Pin_deInit(Unit *unit) |
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{ |
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struct priv *priv = unit->data; |
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// configure the pin as analog
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LL_GPIO_SetPinMode(priv->port, priv->ll_pin, LL_GPIO_MODE_ANALOG); |
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// Release all resources
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rsc_teardown(unit); |
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// Free memory
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free(unit->data); |
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unit->data = NULL; |
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} |
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// ------------------------------------------------------------------------
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enum PinCmd_ { |
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CMD_CLEAR = 0, |
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CMD_SET = 1, |
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CMD_TOGGLE = 2, |
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CMD_READ = 3, |
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}; |
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/** Handle a request message */ |
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static bool Pin_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, PayloadParser *pp) |
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{ |
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(void)pp; |
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struct priv *priv = unit->data; |
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switch (command) { |
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case CMD_CLEAR: |
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if (priv->output) { |
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LL_GPIO_ResetOutputPin(priv->port, priv->ll_pin); |
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} else goto must_be_output; |
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break; |
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case CMD_SET: |
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if (priv->output) { |
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LL_GPIO_SetOutputPin(priv->port, priv->ll_pin); |
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} else goto must_be_output; |
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break; |
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case CMD_TOGGLE: |
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if (priv->output) { |
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LL_GPIO_TogglePin(priv->port, priv->ll_pin); |
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} else goto must_be_output; |
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break; |
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case CMD_READ: |
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if (!priv->output) { |
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com_respond_u8(frame_id, (bool) LL_GPIO_IsInputPinSet(priv->port, priv->ll_pin)); |
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} else goto must_be_input; |
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break; |
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default: |
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com_respond_bad_cmd(frame_id); |
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return false; |
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} |
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return true; |
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must_be_output: |
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com_respond_err(frame_id, "NOT OUTPUT PIN"); |
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return false; |
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must_be_input: |
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com_respond_err(frame_id, "NOT INPUT PIN"); |
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return false; |
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} |
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// ------------------------------------------------------------------------
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/** Unit template */ |
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const UnitDriver UNIT_PIN = { |
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.name = "PIN", |
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.description = "Single digital I/O pin", |
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// Settings
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.preInit = Pin_preInit, |
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.cfgLoadBinary = Pin_loadBinary, |
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.cfgWriteBinary = Pin_writeBinary, |
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.cfgLoadIni = Pin_loadIni, |
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.cfgWriteIni = Pin_writeIni, |
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// Init
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.init = Pin_init, |
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.deInit = Pin_deInit, |
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// Function
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.handleRequest = Pin_handleRequest, |
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}; |
@ -1,12 +0,0 @@ |
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//
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// Created by MightyPork on 2017/11/25.
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//
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#ifndef U_PIN_H |
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#define U_PIN_H |
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#include "unit.h" |
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extern const UnitDriver UNIT_PIN; |
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#endif //U_PIN_H
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