Deprecate xyz.init() in favor of xyz.setup(), removing inherent i2c configuration (#1887)

This commit is contained in:
Arnim Läuger 2017-05-21 16:17:29 +02:00 committed by Marcel Stör
parent e7f063950b
commit 7dae5236e6
12 changed files with 334 additions and 157 deletions

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@ -12,7 +12,7 @@
static const uint32_t adxl345_i2c_id = 0;
static const uint8_t adxl345_i2c_addr = 0x53;
static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
static uint8_t r8u(uint32_t id, uint8_t reg) {
uint8_t ret;
platform_i2c_send_start(id);
@ -26,19 +26,9 @@ static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
return ret;
}
static int ICACHE_FLASH_ATTR adxl345_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
static int adxl345_setup(lua_State* L) {
uint8_t devid;
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
luaL_argcheck(L, sda > 0 && scl > 0, 1, "no i2c for D0");
platform_i2c_setup(adxl345_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
devid = r8u(adxl345_i2c_id, 0x00);
if (devid != 229) {
@ -55,7 +45,24 @@ static int ICACHE_FLASH_ATTR adxl345_init(lua_State* L) {
return 0;
}
static int ICACHE_FLASH_ATTR adxl345_read(lua_State* L) {
static int adxl345_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
platform_print_deprecation_note("adxl345.init() is replaced by adxl345.setup()", "in the next version");
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
luaL_argcheck(L, sda > 0 && scl > 0, 1, "no i2c for D0");
platform_i2c_setup(adxl345_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
return adxl345_setup(L);
}
static int adxl345_read(lua_State* L) {
uint8_t data[6];
int x,y,z;
@ -88,6 +95,8 @@ static int ICACHE_FLASH_ATTR adxl345_read(lua_State* L) {
static const LUA_REG_TYPE adxl345_map[] = {
{ LSTRKEY( "read" ), LFUNCVAL( adxl345_read )},
{ LSTRKEY( "setup" ), LFUNCVAL( adxl345_setup )},
/// init() is deprecated
{ LSTRKEY( "init" ), LFUNCVAL( adxl345_init )},
{ LNILKEY, LNILVAL}
};

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@ -84,10 +84,8 @@ static int _read(uint32_t id, void *buf, uint8_t len, uint8_t off)
return 0;
}
static int am2320_init(lua_State* L)
static int am2320_setup(lua_State* L)
{
uint32_t sda;
uint32_t scl;
int ret;
struct {
uint8_t cmd;
@ -97,6 +95,24 @@ static int am2320_init(lua_State* L)
uint32_t id;
} nfo;
os_delay_us(1500); // give some time to settle things down
ret = _read(am2320_i2c_id, &nfo, sizeof(nfo)-2, 0x08);
if(ret)
return luaL_error(L, "transmission error");
lua_pushinteger(L, ntohs(nfo.model));
lua_pushinteger(L, nfo.version);
lua_pushinteger(L, ntohl(nfo.id));
return 3;
}
static int am2320_init(lua_State* L)
{
uint32_t sda;
uint32_t scl;
platform_print_deprecation_note("am2320.init() is replaced by am2320.setup()", "in the next version");
if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
return luaL_error(L, "wrong arg range");
}
@ -110,15 +126,7 @@ static int am2320_init(lua_State* L)
platform_i2c_setup(am2320_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
os_delay_us(1500); // give some time to settle things down
ret = _read(am2320_i2c_id, &nfo, sizeof(nfo)-2, 0x08);
if(ret)
return luaL_error(L, "transmission error");
lua_pushinteger(L, ntohs(nfo.model));
lua_pushinteger(L, nfo.version);
lua_pushinteger(L, ntohl(nfo.id));
return 3;
return am2320_setup(L);
}
static int am2320_read(lua_State* L)
@ -145,8 +153,10 @@ static int am2320_read(lua_State* L)
}
static const LUA_REG_TYPE am2320_map[] = {
{ LSTRKEY( "read" ), LFUNCVAL( am2320_read )},
{ LSTRKEY( "init" ), LFUNCVAL( am2320_init )},
{ LSTRKEY( "read" ), LFUNCVAL( am2320_read )},
{ LSTRKEY( "setup" ), LFUNCVAL( am2320_setup )},
// init() is deprecated
{ LSTRKEY( "init" ), LFUNCVAL( am2320_init )},
{ LNILKEY, LNILVAL}
};

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@ -227,35 +227,25 @@ static double bme280_qfe2qnh(int32_t qfe, int32_t h) {
return qnh;
}
static int bme280_lua_init(lua_State* L) {
uint8_t sda;
uint8_t scl;
static int bme280_lua_setup(lua_State* L) {
uint8_t config;
uint8_t ack;
uint8_t full_init;
uint8_t const bit3 = 0b111;
uint8_t const bit2 = 0b11;
if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
return luaL_error(L, "wrong arg range");
}
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
bme280_mode = (!lua_isnumber(L, 6)?BME280_NORMAL_MODE:(luaL_checkinteger(L, 6)&bit2)) // 6-th parameter: power mode
| ((!lua_isnumber(L, 4)?BME280_OVERSAMP_16X:(luaL_checkinteger(L, 4)&bit3)) << 2) // 4-th parameter: pressure oversampling
| ((!lua_isnumber(L, 3)?BME280_OVERSAMP_16X:(luaL_checkinteger(L, 3)&bit3)) << 5); // 3-rd parameter: temperature oversampling
bme280_mode = (!lua_isnumber(L, 4)?BME280_NORMAL_MODE:(luaL_checkinteger(L, 4)&bit2)) // 4-th parameter: power mode
| ((!lua_isnumber(L, 2)?BME280_OVERSAMP_16X:(luaL_checkinteger(L, 2)&bit3)) << 2) // 2-nd parameter: pressure oversampling
| ((!lua_isnumber(L, 1)?BME280_OVERSAMP_16X:(luaL_checkinteger(L, 1)&bit3)) << 5); // 1-st parameter: temperature oversampling
bme280_ossh = (!lua_isnumber(L, 5))?BME280_OVERSAMP_16X:(luaL_checkinteger(L, 5)&bit3); // 5-th parameter: humidity oversampling
bme280_ossh = (!lua_isnumber(L, 3))?BME280_OVERSAMP_16X:(luaL_checkinteger(L, 3)&bit3); // 3-rd parameter: humidity oversampling
config = ((!lua_isnumber(L, 7)?BME280_STANDBY_TIME_20_MS:(luaL_checkinteger(L, 7)&bit3))<< 5) // 7-th parameter: inactive duration in normal mode
| ((!lua_isnumber(L, 8)?BME280_FILTER_COEFF_16:(luaL_checkinteger(L, 8)&bit3)) << 2); // 8-th parameter: IIR filter
full_init = !lua_isnumber(L, 9)?1:lua_tointeger(L, 9); // 9-th parameter: init the chip too
config = ((!lua_isnumber(L, 5)?BME280_STANDBY_TIME_20_MS:(luaL_checkinteger(L, 5)&bit3))<< 5) // 5-th parameter: inactive duration in normal mode
| ((!lua_isnumber(L, 6)?BME280_FILTER_COEFF_16:(luaL_checkinteger(L, 6)&bit3)) << 2); // 6-th parameter: IIR filter
full_init = !lua_isnumber(L, 7)?1:lua_tointeger(L, 7); // 7-th parameter: init the chip too
NODE_DBG("mode: %x\nhumidity oss: %x\nconfig: %x\n", bme280_mode, bme280_ossh, config);
platform_i2c_setup(bme280_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
bme280_i2c_addr = BME280_I2C_ADDRESS1;
platform_i2c_send_start(bme280_i2c_id);
ack = platform_i2c_send_address(bme280_i2c_id, bme280_i2c_addr, PLATFORM_I2C_DIRECTION_TRANSMITTER);
@ -324,6 +314,30 @@ static int bme280_lua_init(lua_State* L) {
return 1;
}
static int bme280_lua_init(lua_State* L) {
uint8_t sda;
uint8_t scl;
uint8_t config;
uint8_t ack;
uint8_t full_init;
platform_print_deprecation_note("bme280.init() is replaced by bme280.setup()", "in the next version");
if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
return luaL_error(L, "wrong arg range");
}
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
platform_i2c_setup(bme280_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
// remove sda and scl parameters from stack
lua_remove(L, 1);
lua_remove(L, 1);
return bme280_lua_setup(L);
}
static void bme280_readoutdone (void *arg)
{
NODE_DBG("timer out\n");
@ -481,7 +495,9 @@ static int bme280_lua_dewpoint(lua_State* L) {
}
static const LUA_REG_TYPE bme280_map[] = {
// init() is deprecated
{ LSTRKEY( "init" ), LFUNCVAL(bme280_lua_init)},
{ LSTRKEY( "setup" ), LFUNCVAL(bme280_lua_setup)},
{ LSTRKEY( "temp" ), LFUNCVAL(bme280_lua_temp)},
{ LSTRKEY( "baro" ), LFUNCVAL(bme280_lua_baro)},
{ LSTRKEY( "humi" ), LFUNCVAL(bme280_lua_humi)},

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@ -21,7 +21,7 @@ static struct {
int16_t MD;
} bmp085_data;
static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
static uint8_t r8u(uint32_t id, uint8_t reg) {
uint8_t ret;
platform_i2c_send_start(id);
@ -35,32 +35,18 @@ static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
return ret;
}
static uint16_t ICACHE_FLASH_ATTR r16u(uint32_t id, uint8_t reg) {
static uint16_t r16u(uint32_t id, uint8_t reg) {
uint8_t high = r8u(id, reg);
uint8_t low = r8u(id, reg + 1);
return (high << 8) | low;
}
static int16_t ICACHE_FLASH_ATTR r16(uint32_t id, uint8_t reg) {
static int16_t r16(uint32_t id, uint8_t reg) {
return (int16_t) r16u(id, reg);
}
static int ICACHE_FLASH_ATTR bmp085_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
return luaL_error(L, "wrong arg range");
}
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
if (scl == 0 || sda == 0) {
return luaL_error(L, "no i2c for D0");
}
platform_i2c_setup(bmp085_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
static int bmp085_setup(lua_State* L) {
(void)L;
bmp085_data.AC1 = r16(bmp085_i2c_id, 0xAA);
bmp085_data.AC2 = r16(bmp085_i2c_id, 0xAC);
@ -77,6 +63,28 @@ static int ICACHE_FLASH_ATTR bmp085_init(lua_State* L) {
return 0;
}
static int bmp085_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
platform_print_deprecation_note("bmp085.init() is replaced by bmp085.setup()", "in the next version");
if (!lua_isnumber(L, 1) || !lua_isnumber(L, 2)) {
return luaL_error(L, "wrong arg range");
}
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
if (scl == 0 || sda == 0) {
return luaL_error(L, "no i2c for D0");
}
platform_i2c_setup(bmp085_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
return bmp085_setup(L);
}
static uint32_t bmp085_temperature_raw_b5(void) {
int16_t t, X1, X2;
@ -96,16 +104,16 @@ static uint32_t bmp085_temperature_raw_b5(void) {
return X1 + X2;
}
static int16_t ICACHE_FLASH_ATTR bmp085_temperature(void) {
static int16_t bmp085_temperature(void) {
return (bmp085_temperature_raw_b5() + 8) >> 4;
}
static int ICACHE_FLASH_ATTR bmp085_lua_temperature(lua_State* L) {
static int bmp085_lua_temperature(lua_State* L) {
lua_pushinteger(L, bmp085_temperature());
return 1;
}
static int32_t ICACHE_FLASH_ATTR bmp085_pressure_raw(int oss) {
static int32_t bmp085_pressure_raw(int oss) {
int32_t p;
int32_t p1, p2, p3;
@ -132,7 +140,7 @@ static int32_t ICACHE_FLASH_ATTR bmp085_pressure_raw(int oss) {
return p;
}
static int ICACHE_FLASH_ATTR bmp085_lua_pressure_raw(lua_State* L) {
static int bmp085_lua_pressure_raw(lua_State* L) {
uint8_t oss = 0;
int32_t p;
@ -148,7 +156,7 @@ static int ICACHE_FLASH_ATTR bmp085_lua_pressure_raw(lua_State* L) {
return 1;
}
static int ICACHE_FLASH_ATTR bmp085_lua_pressure(lua_State* L) {
static int bmp085_lua_pressure(lua_State* L) {
uint8_t oss = 0;
int32_t p;
int32_t X1, X2, X3, B3, B4, B5, B6, B7;
@ -187,6 +195,8 @@ static const LUA_REG_TYPE bmp085_map[] = {
{ LSTRKEY( "temperature" ), LFUNCVAL( bmp085_lua_temperature )},
{ LSTRKEY( "pressure" ), LFUNCVAL( bmp085_lua_pressure )},
{ LSTRKEY( "pressure_raw" ), LFUNCVAL( bmp085_lua_pressure_raw )},
{ LSTRKEY( "setup" ), LFUNCVAL( bmp085_setup )},
// init() is deprecated
{ LSTRKEY( "init" ), LFUNCVAL( bmp085_init )},
{ LNILKEY, LNILVAL}
};

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@ -12,7 +12,7 @@
static const uint32_t hmc5883_i2c_id = 0;
static const uint8_t hmc5883_i2c_addr = 0x1E;
static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
static uint8_t r8u(uint32_t id, uint8_t reg) {
uint8_t ret;
platform_i2c_send_start(id);
@ -26,7 +26,7 @@ static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
return ret;
}
static void ICACHE_FLASH_ATTR w8u(uint32_t id, uint8_t reg, uint8_t val) {
static void w8u(uint32_t id, uint8_t reg, uint8_t val) {
platform_i2c_send_start(hmc5883_i2c_id);
platform_i2c_send_address(hmc5883_i2c_id, hmc5883_i2c_addr, PLATFORM_I2C_DIRECTION_TRANSMITTER);
platform_i2c_send_byte(hmc5883_i2c_id, reg);
@ -34,19 +34,9 @@ static void ICACHE_FLASH_ATTR w8u(uint32_t id, uint8_t reg, uint8_t val) {
platform_i2c_send_stop(hmc5883_i2c_id);
}
static int ICACHE_FLASH_ATTR hmc5883_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
static int hmc5883_setup(lua_State* L) {
uint8_t devid_a, devid_b, devid_c;
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
luaL_argcheck(L, sda > 0 && scl > 0, 1, "no i2c for D0");
platform_i2c_setup(hmc5883_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
devid_a = r8u(hmc5883_i2c_id, 10);
devid_b = r8u(hmc5883_i2c_id, 11);
devid_c = r8u(hmc5883_i2c_id, 12);
@ -67,7 +57,24 @@ static int ICACHE_FLASH_ATTR hmc5883_init(lua_State* L) {
return 0;
}
static int ICACHE_FLASH_ATTR hmc5883_read(lua_State* L) {
static int hmc5883_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
platform_print_deprecation_note("hmc5883l.init() is replaced by hmc5883l.setup()", "in the next version");
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
luaL_argcheck(L, sda > 0 && scl > 0, 1, "no i2c for D0");
platform_i2c_setup(hmc5883_i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
return hmc5883_setup(L);
}
static int hmc5883_read(lua_State* L) {
uint8_t data[6];
int x,y,z;
@ -101,6 +108,8 @@ static int ICACHE_FLASH_ATTR hmc5883_read(lua_State* L) {
static const LUA_REG_TYPE hmc5883_map[] = {
{ LSTRKEY( "read" ), LFUNCVAL( hmc5883_read )},
{ LSTRKEY( "setup" ), LFUNCVAL( hmc5883_setup )},
// init() is deprecated
{ LSTRKEY( "init" ), LFUNCVAL( hmc5883_init )},
{ LNILKEY, LNILVAL}
};

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@ -12,7 +12,7 @@
static const uint32_t i2c_id = 0;
static const uint8_t i2c_addr = 0x69;
static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
static uint8_t r8u(uint32_t id, uint8_t reg) {
uint8_t ret;
platform_i2c_send_start(id);
@ -26,7 +26,7 @@ static uint8_t ICACHE_FLASH_ATTR r8u(uint32_t id, uint8_t reg) {
return ret;
}
static void ICACHE_FLASH_ATTR w8u(uint32_t id, uint8_t reg, uint8_t val) {
static void w8u(uint32_t id, uint8_t reg, uint8_t val) {
platform_i2c_send_start(i2c_id);
platform_i2c_send_address(i2c_id, i2c_addr, PLATFORM_I2C_DIRECTION_TRANSMITTER);
platform_i2c_send_byte(i2c_id, reg);
@ -34,19 +34,9 @@ static void ICACHE_FLASH_ATTR w8u(uint32_t id, uint8_t reg, uint8_t val) {
platform_i2c_send_stop(i2c_id);
}
static int ICACHE_FLASH_ATTR l3g4200d_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
static int l3g4200d_setup(lua_State* L) {
uint8_t devid;
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
luaL_argcheck(L, sda > 0 && scl > 0, 1, "no i2c for D0");
platform_i2c_setup(i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
devid = r8u(i2c_id, 0xF);
if (devid != 0xD3) {
@ -58,7 +48,24 @@ static int ICACHE_FLASH_ATTR l3g4200d_init(lua_State* L) {
return 0;
}
static int ICACHE_FLASH_ATTR l3g4200d_read(lua_State* L) {
static int l3g4200d_init(lua_State* L) {
uint32_t sda;
uint32_t scl;
platform_print_deprecation_note("l3g4200d.init() is replaced by l3g4200d.setup()", "in the next version");
sda = luaL_checkinteger(L, 1);
scl = luaL_checkinteger(L, 2);
luaL_argcheck(L, sda > 0 && scl > 0, 1, "no i2c for D0");
platform_i2c_setup(i2c_id, sda, scl, PLATFORM_I2C_SPEED_SLOW);
return l3g4200d_setup(L);
}
static int l3g4200d_read(lua_State* L) {
uint8_t data[6];
int x,y,z;
@ -91,6 +98,8 @@ static int ICACHE_FLASH_ATTR l3g4200d_read(lua_State* L) {
static const LUA_REG_TYPE l3g4200d_map[] = {
{ LSTRKEY( "read" ), LFUNCVAL( l3g4200d_read )},
{ LSTRKEY( "setup" ), LFUNCVAL( l3g4200d_setup )},
// init() is deprecated
{ LSTRKEY( "init" ), LFUNCVAL( l3g4200d_init )},
{ LNILKEY, LNILVAL}
};

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@ -17,7 +17,9 @@ X,Y,Z data (integers)
#### Example
```lua
adxl345.init(1, 2)
local sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
adxl345.setup()
local x,y,z = adxl345.read()
print(string.format("X = %d, Y = %d, Z = %d", x, y, z))
```
@ -25,6 +27,10 @@ print(string.format("X = %d, Y = %d, Z = %d", x, y, z))
## adxl345.init()
Initializes the module and sets the pin configuration.
!!! attention
This function is deprecated and will be removed in upcoming releases. Use `adxl345.setup()` instead.
#### Syntax
`adxl345.init(sda, scl)`
@ -34,3 +40,15 @@ Initializes the module and sets the pin configuration.
#### Returns
`nil`
## adxl345.setup()
Initializes the module.
#### Syntax
`adxl345.setup()`
#### Parameters
None
#### Returns
`nil`

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@ -9,6 +9,10 @@ This module provides access to the [AM2320](https://akizukidenshi.com/download/d
## am2320.init()
Initializes the module and sets the pin configuration. Returns model, version, serial but is seams these where all zero on my model.
!!! attention
This function is deprecated and will be removed in upcoming releases. Use `am2320.setup()` instead.
#### Syntax
`model, version, serial = am2320.init(sda, scl)`
@ -35,9 +39,26 @@ Samples the sensor and returns the relative humidity in % and temperature in cel
#### Example
```lua
am2320.init(1, 2)
sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
am2320.setup()
rh, t = am2320.read()
print(string.format("RH: %s%%", rh / 10))
print(string.format("Temperature: %s degrees C", t / 10))
```
## am2320.setup()
Initializes the module. Returns model, version, serial but is seams these where all zero on my model.
#### Syntax
`model, version, serial = am2320.setup()`
#### Parameters
None
#### Returns
- `model` 16 bits number of model
- `version` 8 bits version number
- `serial` 32 bits serial number
Note: I have only observed values of 0 for all of these, maybe other sensors return more sensible readings.

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@ -5,7 +5,7 @@
This module provides a simple interface to [BME280/BMP280 temperature/air presssure/humidity sensors](http://www.bosch-sensortec.com/bst/products/all_products/bme280) (Bosch Sensortec).
Note that you must call [`init()`](#bme280init) before you can start reading values!
Note that you must call [`setup()`](#bme280setup) before you can start reading values!
## bme280.altitude()
@ -69,13 +69,72 @@ none
Initializes module. Initialization is mandatory before read values.
!!! attention
This function is deprecated and will be removed in upcoming releases. Use `bme280.setup()` instead.
#### Syntax
`bme280.init(sda, scl, [temp_oss, press_oss, humi_oss, power_mode, inactive_duration, IIR_filter])`
#### Parameters
- `sda` - SDA pin
- `scl` - SCL pin
See [`setup()`](#bme280setup).
## bme280.qfe2qnh()
For given altitude converts the air pressure to sea level air pressure.
#### Syntax
`bme280.qfe2qnh(P, altitude)`
#### Parameters
- `P` measured pressure
- `altitude` altitude in meters of measurement point
#### Returns
sea level pressure
## bme280.read()
Reads the sensor and returns the temperature, the air pressure, the air relative humidity and
#### Syntax
`bme280.read([altitude])`
#### Parameters
- (optional) `altitude`- altitude in meters of measurement point. If provided also the air pressure converted to sea level air pressure is returned.
#### Returns
- `T` temperature in celsius as an integer multiplied with 100
- `P` air pressure in hectopascals multiplied by 1000
- `H` relative humidity in percent multiplied by 1000
- `QNH` air pressure in hectopascals multiplied by 1000 converted to sea level
Any of these variables is `nil` if the readout of given measure was not successful.
## bme280.startreadout()
Starts readout (turns the sensor into forced mode). After the readout the sensor turns to sleep mode.
#### Syntax
`bme280.startreadout(delay, callback)`
#### Parameters
- `delay` sets sensor to forced mode and calls the `callback` (if provided) after given number of milliseconds. For 0 the default delay is set to 113ms (sufficient time to perform reading for oversampling settings 16x). For different oversampling setting please refer to [BME280 Final Datasheet - Appendix B: Measurement time and current calculation](http://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf#page=51).
- `callback` if provided it will be invoked after given `delay`. The sensor reading should be finalized by then so.
#### Returns
`nil`
## bme280.setup()
Initializes module. Initialization is mandatory before read values.
#### Syntax
`bme280.setup([temp_oss, press_oss, humi_oss, power_mode, inactive_duration, IIR_filter])`
#### Parameters
- (optional) `temp_oss` - Controls oversampling of temperature data. Default oversampling is 16x.
- (optional) `press_oss` - Controls oversampling of pressure data. Default oversampling is 16x.
- (optional) `humi_oss` - Controls oversampling of humidity data. Default oversampling is 16x
@ -127,7 +186,9 @@ Using forced mode is recommended for applications which require low sampling rat
```lua
alt=320 -- altitude of the measurement place
bme280.init(3, 4)
sda, scl = 3, 4
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
bme280.setup()
P, T = bme280.baro()
print(string.format("QFE=%d.%03d", P/1000, P%1000))
@ -157,7 +218,9 @@ Or simpler and more efficient
```lua
alt=320 -- altitude of the measurement place
bme280.init(3, 4)
sda, scl = 3, 4
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
bme280.setup()
T, P, H, QNH = bme280.read(alt)
local Tsgn = (T < 0 and -1 or 1); T = Tsgn*T
@ -176,11 +239,13 @@ local curAltsgn = (curAlt < 0 and -1 or 1); curAlt = curAltsgn*curAlt
print(string.format("altitude=%s%d.%02d", curAltsgn<0 and "-" or "", curAlt/100, curAlt%100))
```
Use `bme280.init(sda, scl, 1, 3, 0, 3, 0, 4)` for "game mode" - Oversampling settings pressure ×4, temperature ×1, humidity ×0, sensor mode: normal mode, inactive duration = 0.5 ms, IIR filter settings filter coefficient 16.
Use `bme280.setup(1, 3, 0, 3, 0, 4)` for "game mode" - Oversampling settings pressure ×4, temperature ×1, humidity ×0, sensor mode: normal mode, inactive duration = 0.5 ms, IIR filter settings filter coefficient 16.
Example of readout in forced mode (asynchronous)
```lua
bme280.init(3, 4, nil, nil, nil, 0) -- initialize to sleep mode
sda, scl = 3, 4
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
bme280.setup(nil, nil, nil, 0) -- initialize to sleep mode
bme280.startreadout(0, function ()
T, P = bme280.read()
local Tsgn = (T < 0 and -1 or 1); T = Tsgn*T
@ -188,52 +253,6 @@ bme280.startreadout(0, function ()
end)
```
## bme280.qfe2qnh()
For given altitude converts the air pressure to sea level air pressure.
#### Syntax
`bme280.qfe2qnh(P, altitude)`
#### Parameters
- `P` measured pressure
- `altitude` altitude in meters of measurement point
#### Returns
sea level pressure
## bme280.read()
Reads the sensor and returns the temperature, the air pressure, the air relative humidity and
#### Syntax
`bme280.read([altitude])`
#### Parameters
- (optional) `altitude`- altitude in meters of measurement point. If provided also the air pressure converted to sea level air pressure is returned.
#### Returns
- `T` temperature in celsius as an integer multiplied with 100
- `P` air pressure in hectopascals multiplied by 1000
- `H` relative humidity in percent multiplied by 1000
- `QNH` air pressure in hectopascals multiplied by 1000 converted to sea level
Any of these variables is `nil` if the readout of given measure was not successful.
## bme280.startreadout()
Starts readout (turns the sensor into forced mode). After the readout the sensor turns to sleep mode.
#### Syntax
`bme280.startreadout(delay, callback)`
#### Parameters
- `delay` sets sensor to forced mode and calls the `callback` (if provided) after given number of milliseconds. For 0 the default delay is set to 113ms (sufficient time to perform reading for oversampling settings 16x). For different oversampling setting please refer to [BME280 Final Datasheet - Appendix B: Measurement time and current calculation](http://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf#page=51).
- `callback` if provided it will be invoked after given `delay`. The sensor reading should be finalized by then so.
#### Returns
`nil`
## bme280.temp()
Reads the sensor and returns the temperature in celsius as an integer multiplied with 100.

View File

@ -9,6 +9,10 @@ This module provides access to the [BMP085](https://www.sparkfun.com/tutorials/2
## bmp085.init()
Initializes the module and sets the pin configuration.
!!! attention
This function is deprecated and will be removed in upcoming releases. Use `bmp085.setup()` instead.
#### Syntax
`bmp085.init(sda, scl)`
@ -19,6 +23,18 @@ Initializes the module and sets the pin configuration.
#### Returns
`nil`
## bmp085.setup()
Initializes the module.
#### Syntax
`bmp085.setup()`
#### Parameters
None
#### Returns
`nil`
## bmp085.temperature()
Samples the sensor and returns the temperature in celsius as an integer multiplied with 10.
@ -30,7 +46,9 @@ temperature multiplied with 10 (integer)
#### Example
```lua
bmp085.init(1, 2)
local sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW)
bmp085.setup()
local t = bmp085.temperature()
print(string.format("Temperature: %s.%s degrees C", t / 10, t % 10))
```
@ -53,7 +71,9 @@ pressure in pascals (integer)
#### Example
```lua
bmp085.init(1, 2)
local sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
bmp085.setup()
local p = bmp085.pressure()
print(string.format("Pressure: %s.%s mbar", p / 100, p % 100))
```

View File

@ -18,7 +18,9 @@ temperature multiplied with 10 (integer)
#### Example
```lua
hmc58831.init(1, 2)
local sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
hmc58831.setup()
local x,y,z = hmc5883l.read()
print(string.format("x = %d, y = %d, z = %d", x, y, z))
```
@ -26,6 +28,10 @@ print(string.format("x = %d, y = %d, z = %d", x, y, z))
## hmc5883l.init()
Initializes the module and sets the pin configuration.
!!! attention
This function is deprecated and will be removed in upcoming releases. Use `hmc5883l.setup()` instead.
#### Syntax
`hmc5883l.init(sda, scl)`
@ -35,3 +41,15 @@ Initializes the module and sets the pin configuration.
#### Returns
`nil`
## hmc5883l.setup()
Initializes the module.
#### Syntax
`hmc5883l.setup()`
#### Parameters
None
#### Returns
`nil`

View File

@ -17,7 +17,9 @@ X,Y,Z gyroscope output
#### Example
```lua
l3g4200d.init(1, 2)
local sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
l3g4200d.setup()
local x,y,z = l3g4200d.read()
print(string.format("X = %d, Y = %d, Z = %d", x, y, z)
```
@ -25,6 +27,10 @@ print(string.format("X = %d, Y = %d, Z = %d", x, y, z)
## l3g4200d.init()
Initializes the module and sets the pin configuration.
!!! attention
This function is deprecated and will be removed in upcoming releases. Use `l3g4200d.setup()` instead.
#### Syntax
`l3g4200d.init(sda, scl)`
@ -34,3 +40,15 @@ Initializes the module and sets the pin configuration.
#### Returns
`nil`
## l3g4200d.setup()
Initializes the module.
#### Syntax
`l3g4200d.setup()`
#### Parameters
None
#### Returns
`nil`