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dont do this when powered by nfc

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This commit is contained in:
Conor Patrick
2019-02-02 00:21:26 -05:00
parent b7bc50bc4f
commit c3bddee814
1 changed files with 67 additions and 64 deletions
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131
targets/stm32l432/src/ams.c
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@@ -265,83 +265,86 @@ bool ams_init()
LL_SPI_SetRxFIFOThreshold(SPI1,LL_SPI_RX_FIFO_TH_QUARTER);
LL_SPI_Enable(SPI1);
delay(10);
// delay(10);
SELECT();
delay(10);
// delay(10);
ams_write_command(AMS_CMD_DEFAULT);
ams_write_command(AMS_CMD_CLEAR_BUFFER);
// check connection
uint8_t productType = ams_read_reg(AMS_REG_PRODUCT_TYPE);
if (!productType)
{
printf1(TAG_NFC,"Have no product type. Connection error.");
return false;
}
printf1(TAG_NFC,"Product type 0x%02x.", productType);
// enable tunneling mode and RF configuration
ams_write_reg(AMS_REG_IC_CONF2, AMS_RFCFG_EN | AMS_TUN_MOD);
ams_read_eeprom_block(AMS_CONFIG_UID_ADDR, block);
printf1(TAG_NFC,"UID: "); dump_hex1(TAG_NFC,block,4);
ams_read_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
printf1(TAG_NFC,"conf0: "); dump_hex1(TAG_NFC,block,4);
uint8_t sense1 = 0x44;
uint8_t sense2 = 0x00;
uint8_t selr = 0x20; // SAK
if(block[0] != sense1 || block[1] != sense2 || block[2] != selr)
//
if (1)
{
printf1(TAG_NFC,"Writing config block 0\r\n");
block[0] = sense1;
block[1] = sense2;
block[2] = selr;
block[3] = 0x00;
ams_write_command(AMS_CMD_DEFAULT);
ams_write_command(AMS_CMD_CLEAR_BUFFER);
ams_write_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
UNSELECT();
delay(10);
SELECT();
delay(10);
// check connection
uint8_t productType = ams_read_reg(AMS_REG_PRODUCT_TYPE);
if (!productType)
{
printf1(TAG_NFC,"Have no product type. Connection error.");
return false;
}
printf1(TAG_NFC,"Product type 0x%02x.", productType);
// enable tunneling mode and RF configuration
ams_write_reg(AMS_REG_IC_CONF2, AMS_RFCFG_EN | AMS_TUN_MOD);
ams_read_eeprom_block(AMS_CONFIG_UID_ADDR, block);
printf1(TAG_NFC,"UID: "); dump_hex1(TAG_NFC,block,4);
ams_read_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
printf1(TAG_NFC,"conf0: "); dump_hex1(TAG_NFC,block,4);
}
ams_read_eeprom_block(AMS_CONFIG_BLOCK1_ADDR, block);
printf1(TAG_NFC,"conf1: "); dump_hex1(TAG_NFC,block,4);
uint8_t sense1 = 0x44;
uint8_t sense2 = 0x00;
uint8_t selr = 0x20; // SAK
uint8_t ic_cfg1 = AMS_CFG1_OUTPUT_RESISTANCE_100 | AMS_CFG1_VOLTAGE_LEVEL_2V0;
uint8_t ic_cfg2 = AMS_CFG2_TUN_MOD;
if(block[0] != sense1 || block[1] != sense2 || block[2] != selr)
{
printf1(TAG_NFC,"Writing config block 0\r\n");
block[0] = sense1;
block[1] = sense2;
block[2] = selr;
block[3] = 0x00;
if (block[0] != ic_cfg1 || block[1] != ic_cfg2)
{
printf1(TAG_NFC,"Writing config block 1\r\n");
// set IC_CFG1
block[0] = ic_cfg1;
ams_write_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
UNSELECT();
delay(10);
SELECT();
delay(10);
// set IC_CFG2
block[1] = ic_cfg2;
ams_read_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
printf1(TAG_NFC,"conf0: "); dump_hex1(TAG_NFC,block,4);
}
// mask interrupt bits
block[2] = 0x80;
block[3] = 0;
ams_write_eeprom_block(AMS_CONFIG_BLOCK1_ADDR, block);
UNSELECT();
delay(10);
SELECT();
delay(10);
ams_read_eeprom_block(0x7F, block);
ams_read_eeprom_block(AMS_CONFIG_BLOCK1_ADDR, block);
printf1(TAG_NFC,"conf1: "); dump_hex1(TAG_NFC,block,4);
uint8_t ic_cfg1 = AMS_CFG1_OUTPUT_RESISTANCE_100 | AMS_CFG1_VOLTAGE_LEVEL_2V0;
uint8_t ic_cfg2 = AMS_CFG2_TUN_MOD;
if (block[0] != ic_cfg1 || block[1] != ic_cfg2)
{
printf1(TAG_NFC,"Writing config block 1\r\n");
// set IC_CFG1
block[0] = ic_cfg1;
// set IC_CFG2
block[1] = ic_cfg2;
// mask interrupt bits
block[2] = 0x80;
block[3] = 0;
ams_write_eeprom_block(AMS_CONFIG_BLOCK1_ADDR, block);
UNSELECT();
delay(10);
SELECT();
delay(10);
ams_read_eeprom_block(0x7F, block);
printf1(TAG_NFC,"conf1: "); dump_hex1(TAG_NFC,block,4);
}
}
return true;
}