130 lines
4.1 KiB
C
130 lines
4.1 KiB
C
// Do not use the code from ucg submodule and skip the complete source here
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// if the ucg module is not selected.
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// Reason: The whole ucg submodule code tree might not even exist in this case.
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#include "user_modules.h"
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#ifdef LUA_USE_MODULES_UCG
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#include <string.h>
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#include "c_stdlib.h"
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#include "platform.h"
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#define USE_PIN_LIST
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#include "ucg_nodemcu_hal.h"
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#define delayMicroseconds os_delay_us
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static spi_data_type cache;
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static uint8_t cached;
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#define CACHED_TRANSFER(dat, num) cache = cached = 0; \
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while( arg > 0 ) { \
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if (cached == 4) { \
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platform_spi_transaction( 1, 0, 0, 32, cache, 0, 0, 0 ); \
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cache = cached = 0; \
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} \
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cache = (cache << num*8) | dat; \
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cached += num; \
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arg--; \
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} \
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if (cached > 0) { \
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platform_spi_transaction( 1, 0, 0, cached * 8, cache, 0, 0, 0 ); \
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}
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int16_t ucg_com_nodemcu_hw_spi(ucg_t *ucg, int16_t msg, uint16_t arg, uint8_t *data)
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{
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switch(msg)
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{
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case UCG_COM_MSG_POWER_UP:
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/* "data" is a pointer to ucg_com_info_t structure with the following information: */
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/* ((ucg_com_info_t *)data)->serial_clk_speed value in nanoseconds */
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/* ((ucg_com_info_t *)data)->parallel_clk_speed value in nanoseconds */
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/* setup pins */
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// we assume that the SPI interface was already initialized
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// just care for the /CS and D/C pins
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//platform_gpio_write( ucg->pin_list[0], value );
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if ( ucg->pin_list[UCG_PIN_RST] != UCG_PIN_VAL_NONE )
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platform_gpio_mode( ucg->pin_list[UCG_PIN_RST], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
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platform_gpio_mode( ucg->pin_list[UCG_PIN_CD], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
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if ( ucg->pin_list[UCG_PIN_CS] != UCG_PIN_VAL_NONE )
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platform_gpio_mode( ucg->pin_list[UCG_PIN_CS], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
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break;
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case UCG_COM_MSG_POWER_DOWN:
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break;
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case UCG_COM_MSG_DELAY:
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delayMicroseconds(arg);
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break;
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case UCG_COM_MSG_CHANGE_RESET_LINE:
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if ( ucg->pin_list[UCG_PIN_RST] != UCG_PIN_VAL_NONE )
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platform_gpio_write( ucg->pin_list[UCG_PIN_RST], arg );
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break;
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case UCG_COM_MSG_CHANGE_CS_LINE:
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if ( ucg->pin_list[UCG_PIN_CS] != UCG_PIN_VAL_NONE )
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platform_gpio_write( ucg->pin_list[UCG_PIN_CS], arg );
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break;
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case UCG_COM_MSG_CHANGE_CD_LINE:
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platform_gpio_write( ucg->pin_list[UCG_PIN_CD], arg );
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break;
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case UCG_COM_MSG_SEND_BYTE:
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platform_spi_send( 1, 8, arg );
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break;
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case UCG_COM_MSG_REPEAT_1_BYTE:
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CACHED_TRANSFER(data[0], 1);
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break;
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case UCG_COM_MSG_REPEAT_2_BYTES:
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CACHED_TRANSFER((data[0] << 8) | data[1], 2);
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break;
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case UCG_COM_MSG_REPEAT_3_BYTES:
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while( arg > 0 ) {
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platform_spi_transaction( 1, 0, 0, 24, (data[0] << 16) | (data[1] << 8) | data[2], 0, 0, 0 );
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arg--;
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}
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break;
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case UCG_COM_MSG_SEND_STR:
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CACHED_TRANSFER(*data++, 1);
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break;
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case UCG_COM_MSG_SEND_CD_DATA_SEQUENCE:
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while(arg > 0)
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{
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if ( *data != 0 )
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{
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/* set the data line directly, ignore the setting from UCG_CFG_CD */
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if ( *data == 1 )
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{
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platform_gpio_write( ucg->pin_list[UCG_PIN_CD], 0 );
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}
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else
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{
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platform_gpio_write( ucg->pin_list[UCG_PIN_CD], 1 );
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}
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}
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data++;
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platform_spi_send( 1, 8, *data );
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data++;
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arg--;
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}
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break;
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}
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return 1;
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}
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#endif /* LUA_USE_MODULES_UCG */
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