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- // Module for interfacing with adc
- #include "module.h"
- #include "lauxlib.h"
- #include "platform.h"
- #include <stdint.h>
- #include "user_interface.h"
- // Lua: read(id) , return system adc
- static int adc_sample( lua_State* L )
- {
- unsigned id = luaL_checkinteger( L, 1 );
- MOD_CHECK_ID( adc, id );
- unsigned val = 0xFFFF & system_adc_read();
- lua_pushinteger( L, val );
- return 1;
- }
- // Lua: readvdd33()
- static int adc_readvdd33( lua_State* L )
- {
- lua_pushinteger(L, system_get_vdd33 ());
- return 1;
- }
- // Lua: adc.force_init_mode(x)
- static int adc_init107( lua_State *L )
- {
- uint8_t byte107 = luaL_checkinteger (L, 1);
- uint32_t init_data[SPI_FLASH_SEC_SIZE/sizeof(uint32_t)];
- partition_item_t pd_pt = {0,0,0};
- uint32_t init_sector;
- luaL_argcheck(L, cast(uint8_t, byte107+1) < 2, 1, "Invalid mode");
- system_partition_get_item(SYSTEM_PARTITION_PHY_DATA, &pd_pt);
- init_sector = platform_flash_get_sector_of_address(pd_pt.addr);
- if (pd_pt.size == 0 ||
- platform_s_flash_read(init_data, pd_pt.addr, sizeof(init_data))==0)
- return luaL_error(L, "flash read error");
- // If it's already the correct value, we don't need to force it
- if (cast(uint8_t *, init_data)[107] == byte107) {
- lua_pushboolean (L, false);
- return 1;
- }
- cast(uint8_t *, init_data)[107] = byte107;
- /* Only do erase if toggling 0x00 to 0xFF */
- if(byte107 && platform_flash_erase_sector(init_sector) != PLATFORM_OK)
- return luaL_error(L, "flash erase error");
- if(platform_flash_write(init_data, pd_pt.addr, sizeof(init_data))==0)
- return luaL_error(L, "flash write error");
- lua_pushboolean (L, true);
- return 1;
- }
- // Module function map
- LROT_BEGIN(adc, NULL, 0)
- LROT_FUNCENTRY( read, adc_sample )
- LROT_FUNCENTRY( readvdd33, adc_readvdd33 )
- LROT_FUNCENTRY( force_init_mode, adc_init107 )
- LROT_NUMENTRY( INIT_ADC, 0x00 )
- LROT_NUMENTRY( INIT_VDD33, 0xff )
- LROT_END(adc, NULL, 0)
- NODEMCU_MODULE(ADC, "adc", adc, NULL);
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