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gex-core/units/i2c/_i2c_settings.c

106 lines
2.6 KiB

//
// Created by MightyPork on 2018/02/03.
//
#include "platform.h"
#include "unit_base.h"
#define I2C_INTERNAL
#include "_i2c_internal.h"
/** Load from a binary buffer stored in Flash */
void UI2C_loadBinary(Unit *unit, PayloadParser *pp)
{
struct priv *priv = unit->data;
uint8_t version = pp_u8(pp);
(void)version;
priv->periph_num = pp_u8(pp);
priv->anf = pp_bool(pp);
priv->dnf = pp_u8(pp);
priv->speed = pp_u8(pp);
if (version >= 1) {
priv->remap = pp_u8(pp);
}
}
/** Write to a binary buffer for storing in Flash */
void UI2C_writeBinary(Unit *unit, PayloadBuilder *pb)
{
struct priv *priv = unit->data;
pb_u8(pb, 1); // version
pb_u8(pb, priv->periph_num);
pb_bool(pb, priv->anf);
pb_u8(pb, priv->dnf);
pb_u8(pb, priv->speed);
pb_u8(pb, priv->remap);
}
// ------------------------------------------------------------------------
/** Parse a key-value pair from the INI file */
error_t UI2C_loadIni(Unit *unit, const char *key, const char *value)
{
bool suc = true;
struct priv *priv = unit->data;
if (streq(key, "device")) {
priv->periph_num = (uint8_t) avr_atoi(value);
}
else if (streq(key, "remap")) {
priv->remap = (uint8_t) avr_atoi(value);
}
else if (streq(key, "analog-filter")) {
priv->anf = str_parse_yn(value, &suc);
}
else if (streq(key, "digital-filter")) {
priv->dnf = (uint8_t) avr_atoi(value);
}
else if (streq(key, "speed")) {
priv->speed = (uint8_t) avr_atoi(value);
}
else {
return E_BAD_KEY;
}
if (!suc) return E_BAD_VALUE;
return E_SUCCESS;
}
/** Generate INI file section for the unit */
void UI2C_writeIni(Unit *unit, IniWriter *iw)
{
struct priv *priv = unit->data;
iw_comment(iw, "Peripheral number (I2Cx)");
iw_entry(iw, "device", "%d", (int)priv->periph_num);
iw_comment(iw, "Pin mappings (SCL,SDA)");
#if GEX_PLAT_F072_DISCOVERY
iw_comment(iw, " I2C1: (0) B6,B7 (1) B8,B9");
iw_comment(iw, " I2C2: (0) B10,B11 (1) B13,B14");
#elif GEX_PLAT_F103_BLUEPILL
#error "NO IMPL"
#elif GEX_PLAT_F303_DISCOVERY
#error "NO IMPL"
#elif GEX_PLAT_F407_DISCOVERY
#error "NO IMPL"
#else
#error "BAD PLATFORM!"
#endif
iw_entry(iw, "remap", "%d", (int)priv->remap);
iw_cmt_newline(iw);
iw_comment(iw, "Speed: 1-Standard, 2-Fast, 3-Fast+");
iw_entry(iw, "speed", "%d", (int)priv->speed);
iw_comment(iw, "Analog noise filter enable (Y,N)");
iw_entry(iw, "analog-filter", "%s", str_yn(priv->anf));
iw_comment(iw, "Digital noise filter bandwidth (0-15)");
iw_entry(iw, "digital-filter", "%d", (int)priv->dnf);
}