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autodetect passive nfc operation or usb operation

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This commit is contained in:
Conor Patrick
2019-02-26 15:04:23 -05:00
parent e2ca7f52db
commit e8d0ad5e7c
9 changed files with 175 additions and 153 deletions
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150
targets/stm32l432/src/ams.c
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@@ -6,6 +6,7 @@
#include "log.h"
#include "util.h"
#include "device.h"
#include "nfc.h"
static void flush_rx()
{
@@ -269,11 +270,8 @@ void ams_print_int1(uint8_t int0)
#endif
}
bool ams_init()
void ams_init()
{
uint8_t block[4];
LL_GPIO_SetPinMode(SOLO_AMS_CS_PORT,SOLO_AMS_CS_PIN,LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetOutputPin(SOLO_AMS_CS_PORT,SOLO_AMS_CS_PIN);
@@ -284,85 +282,85 @@ bool ams_init()
// delay(10);
SELECT();
delay(2);
delay(1);
}
// Needs to be disabled for passive operation
if (0)
// if (1)
void ams_configure()
{
// Should not be used during passive operation.
uint8_t block[4];
// check connection
uint8_t productType = ams_read_reg(AMS_REG_PRODUCT_TYPE);
if (productType != 0x14)
{
// check connection
uint8_t productType = ams_read_reg(AMS_REG_PRODUCT_TYPE);
if (productType != 0x14)
{
printf1(TAG_NFC, "Have wrong product type [0x%02x]. AMS3956 connection error.\n", productType);
return false;
}
printf1(TAG_ERR, "Have wrong product type [0x%02x]. AMS3956 connection error.\n", productType);
}
printf1(TAG_NFC,"AMS3956 product type 0x%02x.\n", productType);
printf1(TAG_NFC,"AMS3956 product type 0x%02x.\n", productType);
ams_read_eeprom_block(AMS_CONFIG_UID_ADDR, block);
printf1(TAG_NFC,"UID: 3F 14 02 - "); dump_hex1(TAG_NFC,block,4);
ams_read_eeprom_block(AMS_CONFIG_UID_ADDR, block);
printf1(TAG_NFC,"UID: 3F 14 02 - "); 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)
{
printf1(TAG_NFC,"Writing config block 0\r\n");
block[0] = sense1;
block[1] = sense2;
block[2] = selr;
block[3] = 0x00;
ams_write_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
UNSELECT();
delay(10);
SELECT();
delay(10);
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)
{
printf1(TAG_NFC,"Writing config block 0\r\n");
block[0] = sense1;
block[1] = sense2;
block[2] = selr;
block[3] = 0x00;
ams_write_eeprom_block(AMS_CONFIG_BLOCK0_ADDR, block);
UNSELECT();
delay(10);
SELECT();
delay(10);
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 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");
ams_write_reg(AMS_REG_IC_CONF1,ic_cfg1);
ams_write_reg(AMS_REG_IC_CONF2,ic_cfg2);
// 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;
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");
ams_write_reg(AMS_REG_IC_CONF1,ic_cfg1);
ams_write_reg(AMS_REG_IC_CONF2,ic_cfg2);
// 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);
}
}