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143 lines
3.9 KiB
143 lines
3.9 KiB
//
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// Created by MightyPork on 2018/02/03.
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//
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#include "platform.h"
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#include "unit_base.h"
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#define SPI_INTERNAL
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#include "_spi_internal.h"
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/** Load from a binary buffer stored in Flash */
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void USPI_loadBinary(Unit *unit, PayloadParser *pp)
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{
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struct priv *priv = unit->data;
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uint8_t version = pp_u8(pp);
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(void)version;
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priv->periph_num = pp_u8(pp);
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priv->prescaller = pp_u16(pp);
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priv->remap = pp_u8(pp);
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priv->cpol = pp_bool(pp);
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priv->cpha = pp_bool(pp);
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priv->tx_only = pp_bool(pp);
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priv->lsb_first = pp_bool(pp);
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priv->ssn_port_name = pp_char(pp);
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priv->ssn_pins = pp_u16(pp);
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}
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/** Write to a binary buffer for storing in Flash */
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void USPI_writeBinary(Unit *unit, PayloadBuilder *pb)
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{
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struct priv *priv = unit->data;
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pb_u8(pb, 0); // version
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pb_u8(pb, priv->periph_num);
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pb_u16(pb, priv->prescaller);
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pb_u8(pb, priv->remap);
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pb_bool(pb, priv->cpol);
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pb_bool(pb, priv->cpha);
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pb_bool(pb, priv->tx_only);
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pb_bool(pb, priv->lsb_first);
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pb_char(pb, priv->ssn_port_name);
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pb_u16(pb, priv->ssn_pins);
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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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error_t USPI_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, "device")) {
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priv->periph_num = (uint8_t) avr_atoi(value);
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}
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else if (streq(key, "remap")) {
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priv->remap = (uint8_t) avr_atoi(value);
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}
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else if (streq(key, "prescaller")) {
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priv->prescaller = (uint16_t ) avr_atoi(value);
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}
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else if (streq(key, "cpol")) {
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priv->cpol = (bool) avr_atoi(value);
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}
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else if (streq(key, "cpha")) {
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priv->cpha = (bool) avr_atoi(value);
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}
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else if (streq(key, "tx-only")) {
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priv->tx_only = str_parse_yn(value, &suc);
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}
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else if (streq(key, "first-bit")) {
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priv->lsb_first = (bool)str_parse_2(value, "MSB", 0, "LSB", 1, &suc);
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}
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else if (streq(key, "port")) {
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suc = parse_port_name(value, &priv->ssn_port_name);
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}
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else if (streq(key, "pins")) {
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priv->ssn_pins = parse_pinmask(value, &suc);
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}
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else {
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return E_BAD_KEY;
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}
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if (!suc) return E_BAD_VALUE;
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return E_SUCCESS;
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}
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/** Generate INI file section for the unit */
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void USPI_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, "Peripheral number (SPIx)");
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iw_entry(iw, "device", "%d", (int)priv->periph_num);
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// TODO show a legend for peripherals and remaps
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iw_comment(iw, "Pin mappings (SCK,MISO,MOSI)");
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#if GEX_PLAT_F072_DISCOVERY
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iw_comment(iw, " SPI1: (0) A5,A6,A7 (1) B3,B4,B5 (2) E13,E14,E15");
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iw_comment(iw, " SPI2: (0) B13,B14,B15 (1) D1,D3,D4");
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#elif GEX_PLAT_F103_BLUEPILL
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#error "NO IMPL"
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#elif GEX_PLAT_F303_DISCOVERY
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#error "NO IMPL"
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#elif GEX_PLAT_F407_DISCOVERY
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#error "NO IMPL"
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#else
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#error "BAD PLATFORM!"
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#endif
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iw_entry(iw, "remap", "%d", (int)priv->remap);
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iw_cmt_newline(iw);
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iw_comment(iw, "Prescaller: 2,4,8,...,256");
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iw_entry(iw, "prescaller", "%d", (int)priv->prescaller);
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iw_comment(iw, "Clock polarity: 0,1 (clock idle level)");
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iw_entry(iw, "cpol", "%d", (int)priv->cpol);
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iw_comment(iw, "Clock phase: 0,1 (active edge, 0-first, 1-second)");
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iw_entry(iw, "cpha", "%d", (int)priv->cpha);
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iw_comment(iw, "Transmit only, disable MISO");
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iw_entry(iw, "tx-only", str_yn(priv->tx_only));
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iw_comment(iw, "Bit order (LSB or MSB first)");
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iw_entry(iw, "first-bit", str_2((uint32_t)priv->lsb_first,
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0, "MSB",
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1, "LSB"));
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iw_cmt_newline(iw);
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iw_comment(iw, "SS port name");
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iw_entry(iw, "port", "%c", priv->ssn_port_name);
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iw_comment(iw, "SS pins (comma separated, supports ranges)");
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iw_entry(iw, "pins", "%s", pinmask2str(priv->ssn_pins, unit_tmp512));
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}
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