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Driver update: I2S pdm and built-in DAC

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1. Modify I2S DAC built-in mode settings
2. Add I2S pdm mode
3. Correct I2S signal index in full-duplex mode
4. Modify dac output function
5. Add dac pad init functions
6. Modify DAC documentation
7. Add i2s_set_dac_mode API
This commit is contained in:
Wangjialin
2017-05-03 18:55:52 +08:00
parent 15a6145961
commit 1f055d28b8
6 changed files with 306 additions and 82 deletions
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12
docs/api-reference/peripherals/dac.rst
View File

@@ -22,7 +22,8 @@ Setting DAC channel 1 (GPIO 25) voltage to approx 0.78 of VDD_A voltage (VDD * 2
...
dac_out_voltage(DAC_CHANNEL_1, 200);
dac_output_enable(DAC_CHANNEL_1);
dac_output_voltage(DAC_CHANNEL_1, 200);
API Reference
-------------
@@ -40,6 +41,9 @@ Enumerations
Functions
^^^^^^^^^
.. doxygenfunction:: dac_out_voltage
.. doxygenfunction:: dac_output_voltage
.. doxygenfunction:: dac_output_enable
.. doxygenfunction:: dac_output_disable
.. doxygenfunction:: dac_i2s_enable
.. doxygenfunction:: dac_i2s_disable

9
docs/api-reference/peripherals/i2s.rst
View File

@@ -60,7 +60,7 @@ Short example configuring I2S to use internal DAC for analog output::
static const i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN,
.sample_rate = 44100,
.bits_per_sample = 8, /* must be 8 for built-in DAC */
.bits_per_sample = 16, /* the DAC module will only take the 8bits from MSB */
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_I2S_MSB,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, // high interrupt priority
@@ -72,7 +72,10 @@ Short example configuring I2S to use internal DAC for analog output::
i2s_driver_install(i2s_num, &i2s_config, 0, NULL); //install and start i2s driver
i2s_set_pin(i2s_num, NULL); //for internal DAC
i2s_set_pin(i2s_num, NULL); //for internal DAC, this will enable both of the internal channels
//You can call i2s_set_dac_mode to set built-in DAC output mode.
//i2s_set_dac_mode(I2S_DAC_CHANNEL_BOTH_EN);
i2s_set_sample_rates(i2s_num, 22050); //set sample rates
@@ -112,11 +115,13 @@ Enumerations
.. doxygenenum:: i2s_port_t
.. doxygenenum:: i2s_mode_t
.. doxygenenum:: i2s_event_type_t
.. doxygenenum:: i2s_dac_mode_t
Functions
^^^^^^^^^
.. doxygenfunction:: i2s_set_pin
.. doxygenfunction:: i2s_set_dac_mode
.. doxygenfunction:: i2s_driver_install
.. doxygenfunction:: i2s_driver_uninstall
.. doxygenfunction:: i2s_write_bytes