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chg: clean up

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This commit is contained in:
Chris 2018-07-04 15:29:27 +02:00
commit 3ecff83de2
3 changed files with 36 additions and 26 deletions
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53
common/i2c.c
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@ -22,17 +22,29 @@
#define SCL_read (AT91C_BASE_PIOA->PIO_PDSR & GPIO_SCL)
#define SDA_read (AT91C_BASE_PIOA->PIO_PDSR & GPIO_SDA)
#define I2C_PageSize 8
volatile unsigned long c;
// 直接使用循环来延时，一个循环 6 条指令，48M， Delay=1 大概为 200kbps
void I2CSpinDelayClk(uint16_t delay) __attribute__((optimize("O0")));
void I2CSpinDelayClk(uint16_t delay) {
volatile uint32_t c;
//void I2CSpinDelayClk(uint16_t delay) ;
void __attribute__((optimize("O0"))) I2CSpinDelayClk(uint16_t delay) {
for (c = delay * 2; c; c--) {};
}
/*
#define I2C_DELAY_1CLK I2CSpinDelayClk(1)
#define I2C_DELAY_2CLK I2CSpinDelayClk(2)
#define I2C_DELAY_XCLK(x) I2CSpinDelayClk((x))
*/
// ͨѶÑÓ³Ùº¯Êý ommunication delay function
#define I2C_DELAY_1CLK I2C_DELAY_1()
#define I2C_DELAY_2CLK I2C_DELAY_2()
#define I2C_DELAY_XCLK(x) I2C_DELAY_X((x))
void I2C_DELAY_1(void) { I2CSpinDelayClk(1);}
void I2C_DELAY_2(void) { I2CSpinDelayClk(2);}
void I2C_DELAY_X(uint16_t delay) { I2CSpinDelayClk(delay);}
void I2C_init(void) {
// 配置复位引脚，关闭上拉，推挽输出，默认高
// Configure reset pin, close up pull up, push-pull output, default high
@ -54,9 +66,6 @@ void I2C_init(void) {
AT91C_BASE_PIOA->PIO_PER = GPIO_SCL | GPIO_SDA | GPIO_RST;
}
#define I2C_DELAY_1CLK I2CSpinDelayClk(1)
#define I2C_DELAY_2CLK I2CSpinDelayClk(2)
#define I2C_DELAY_XCLK(x) I2CSpinDelayClk((x))
// 设置复位状态
// set the reset state
@ -99,9 +108,10 @@ void I2C_Reset_EnterBootloader(void) {
// 等待时钟变高
// Wait for the clock to go High.
volatile uint16_t count;
bool WaitSCL_H(void) {
volatile uint16_t count = 5000;
count = 5000;
while (count--) {
if (SCL_read) {
@ -196,7 +206,7 @@ void I2C_SendByte(uint8_t data) {
SCL_L;
}
uint8_t I2C_ReceiveByte(void) {
uint8_t I2C_ReadByte(void) {
uint8_t i = 8, b = 0;
SDA_H;
@ -241,7 +251,7 @@ bool I2C_WriteByte(uint8_t data, uint8_t device_cmd, uint8_t device_address) {
if (bBreak) {
I2C_Stop();
DbpString("I2C_WaitAck Error\n");
DbpString("I2C_WaitAck Error");
return false;
}
@ -286,7 +296,7 @@ bool I2C_BufferWrite(uint8_t *data, uint8_t len, uint8_t device_cmd, uint8_t dev
if (bBreak) {
I2C_Stop();
DbpString("I2C_WaitAck Error\n");
DbpString("I2C_WaitAck Error");
return false;
}
@ -325,14 +335,14 @@ uint8_t I2C_BufferRead(uint8_t *data, uint8_t len, uint8_t device_cmd, uint8_t d
if (bBreak) {
I2C_Stop();
DbpString("I2C_WaitAck Error\n");
DbpString("I2C_WaitAck Error");
return 0;
}
// reading
while (len) {
len--;
*data = I2C_ReceiveByte();
*data = I2C_ReadByte();
// 读取的第一个字节为后续长度
// The first byte read is the message length
if (!readcount && (len > *data))
@ -351,14 +361,11 @@ uint8_t I2C_BufferRead(uint8_t *data, uint8_t len, uint8_t device_cmd, uint8_t d
return readcount;
}
void i2c_print_status(void) {
DbpString("Smart card module (ISO 7816)");
void I2C_print_status(void) {
I2C_init();
I2C_Reset_EnterMainProgram();
// get version
uint8_t resp[3] = {0};
uint8_t len = I2C_BufferRead(resp, 3, I2C_DEVICE_CMD_GETVERSION, I2C_DEVICE_ADDRESS_MAIN);
if ( len == 3)
Dbprintf(" FW version................v%x.%02x", resp[1], resp[2]);
uint8_t resp[4] = {0};
uint8_t len = I2C_BufferRead(resp, 4, I2C_DEVICE_CMD_GETVERSION, I2C_DEVICE_ADDRESS_MAIN);
DbpString("Smart card module (ISO 7816)");
Dbprintf(" FW version................v%x.%02x (len %d", resp[1], resp[2], len);
}