both samd21/d51 works perfectly with max3421e
This commit is contained in:
hathach
parent
605ad73ec0
commit
e32c1e08bd
|
|
@ -43,6 +43,22 @@
|
|||
#define UART_RX_PIN 4
|
||||
#define UART_TX_PIN 5
|
||||
|
||||
// SPI for USB host shield
|
||||
#define MAX3421_SERCOM_ID 4 // SERCOM4
|
||||
#define MAX3421_SERCOM_FUNCTION 3 // function D (Sercom Alt)
|
||||
|
||||
#define MAX3421_SCK_PIN (32+11)
|
||||
#define MAX3421_MOSI_PIN (32+10)
|
||||
#define MAX3421_MISO_PIN 12
|
||||
#define MAX3421_TX_PAD 1 // MOSI = PAD_2, SCK = PAD_3
|
||||
#define MAX3421_RX_PAD 0 // MISO = PAD_2
|
||||
|
||||
#define MAX3421_CS_PIN 18 // D10
|
||||
|
||||
#define MAX3421_INTR_PIN 7 // D9
|
||||
#define MAX3421_INTR_EIC_ID 7 // EIC7
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -46,19 +46,6 @@
|
|||
#pragma GCC diagnostic pop
|
||||
#endif
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
// Forward USB interrupt events to TinyUSB IRQ Handler
|
||||
//--------------------------------------------------------------------+
|
||||
void USB_Handler(void)
|
||||
{
|
||||
tud_int_handler(0);
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
// UART support
|
||||
//--------------------------------------------------------------------+
|
||||
static void uart_init(void);
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
|
||||
//--------------------------------------------------------------------+
|
||||
|
|
@ -69,8 +56,25 @@ static void uart_init(void);
|
|||
/* Not referenced GCLKs, initialized last */
|
||||
#define _GCLK_INIT_LAST (~_GCLK_INIT_1ST)
|
||||
|
||||
void board_init(void)
|
||||
{
|
||||
//--------------------------------------------------------------------+
|
||||
// Forward USB interrupt events to TinyUSB IRQ Handler
|
||||
//--------------------------------------------------------------------+
|
||||
void USB_Handler(void) {
|
||||
tud_int_handler(0);
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
// Implementation
|
||||
//--------------------------------------------------------------------+
|
||||
static void uart_init(void);
|
||||
|
||||
#if CFG_TUH_ENABLED && defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421
|
||||
#define MAX3421_SERCOM TU_XSTRCAT(SERCOM, MAX3421_SERCOM_ID)
|
||||
|
||||
static void max3421_init(void);
|
||||
#endif
|
||||
|
||||
void board_init(void) {
|
||||
// Clock init ( follow hpl_init.c )
|
||||
hri_nvmctrl_set_CTRLB_RWS_bf(NVMCTRL, 2);
|
||||
|
||||
|
|
@ -85,7 +89,7 @@ void board_init(void)
|
|||
// Update SystemCoreClock since it is hard coded with asf4 and not correct
|
||||
// Init 1ms tick timer (samd SystemCoreClock may not correct)
|
||||
SystemCoreClock = CONF_CPU_FREQUENCY;
|
||||
#if CFG_TUSB_OS == OPT_OS_NONE
|
||||
#if CFG_TUSB_OS == OPT_OS_NONE
|
||||
SysTick_Config(CONF_CPU_FREQUENCY / 1000);
|
||||
#endif
|
||||
|
||||
|
|
@ -103,7 +107,7 @@ void board_init(void)
|
|||
|
||||
uart_init();
|
||||
|
||||
#if CFG_TUSB_OS == OPT_OS_FREERTOS
|
||||
#if CFG_TUSB_OS == OPT_OS_FREERTOS
|
||||
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
|
||||
NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
|
||||
#endif
|
||||
|
|
@ -134,22 +138,24 @@ void board_init(void)
|
|||
|
||||
gpio_set_pin_function(PIN_PA19, PINMUX_PA19F_TCC0_WO3);
|
||||
_gclk_enable_channel(TCC0_GCLK_ID, GCLK_CLKCTRL_GEN_GCLK0_Val);
|
||||
|
||||
#if CFG_TUH_ENABLED && defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421
|
||||
max3421_init();
|
||||
#endif
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
// Board porting API
|
||||
//--------------------------------------------------------------------+
|
||||
|
||||
void board_led_write(bool state)
|
||||
{
|
||||
(void)state;
|
||||
void board_led_write(bool state) {
|
||||
(void) state;
|
||||
#ifdef LED_PIN
|
||||
gpio_set_pin_level(LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
|
||||
gpio_set_pin_level(LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
|
||||
#endif
|
||||
}
|
||||
|
||||
uint32_t board_button_read(void)
|
||||
{
|
||||
uint32_t board_button_read(void) {
|
||||
#ifdef BUTTON_PIN
|
||||
return BUTTON_STATE_ACTIVE == gpio_get_pin_level(BUTTON_PIN);
|
||||
#else
|
||||
|
|
@ -227,33 +233,185 @@ int board_uart_write(void const * buf, int len)
|
|||
}
|
||||
|
||||
#else // ! defined(UART_SERCOM)
|
||||
static void uart_init(void)
|
||||
{
|
||||
|
||||
static void uart_init(void) {
|
||||
}
|
||||
|
||||
int board_uart_read(uint8_t* buf, int len)
|
||||
{
|
||||
(void) buf; (void) len;
|
||||
int board_uart_read(uint8_t *buf, int len) {
|
||||
(void) buf;
|
||||
(void) len;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int board_uart_write(void const * buf, int len)
|
||||
{
|
||||
(void) buf; (void) len;
|
||||
int board_uart_write(void const *buf, int len) {
|
||||
(void) buf;
|
||||
(void) len;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#if CFG_TUSB_OS == OPT_OS_NONE
|
||||
#if CFG_TUSB_OS == OPT_OS_NONE
|
||||
volatile uint32_t system_ticks = 0;
|
||||
void SysTick_Handler (void)
|
||||
{
|
||||
|
||||
void SysTick_Handler(void) {
|
||||
system_ticks++;
|
||||
}
|
||||
|
||||
uint32_t board_millis(void)
|
||||
{
|
||||
uint32_t board_millis(void) {
|
||||
return system_ticks;
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------+
|
||||
//
|
||||
//--------------------------------------------------------------------+
|
||||
#if CFG_TUH_ENABLED && defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421
|
||||
|
||||
static void max3421_init(void) {
|
||||
//------------- SPI Init -------------//
|
||||
uint32_t const baudrate = 4000000u;
|
||||
|
||||
// Enable the APB clock for SERCOM
|
||||
PM->APBCMASK.reg |= 1u << (PM_APBCMASK_SERCOM0_Pos + MAX3421_SERCOM_ID);
|
||||
|
||||
// Configure GCLK for SERCOM
|
||||
// GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID_SERCOM4_CORE | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_CLKEN;
|
||||
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID(GCLK_CLKCTRL_ID_SERCOM0_CORE_Val+MAX3421_SERCOM_ID) |
|
||||
GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_CLKEN;
|
||||
while (GCLK->STATUS.bit.SYNCBUSY);
|
||||
|
||||
Sercom* sercom = MAX3421_SERCOM;
|
||||
|
||||
// Disable the SPI module
|
||||
sercom->SPI.CTRLA.bit.ENABLE = 0;
|
||||
|
||||
// Reset the SPI module
|
||||
sercom->SPI.CTRLA.bit.SWRST = 1;
|
||||
while (sercom->SPI.SYNCBUSY.bit.SWRST);
|
||||
|
||||
// Set up SPI in master mode, MSB first, SPI mode 0
|
||||
sercom->SPI.CTRLA.reg = SERCOM_SPI_CTRLA_DOPO(MAX3421_TX_PAD) | SERCOM_SPI_CTRLA_DIPO(MAX3421_RX_PAD) |
|
||||
SERCOM_SPI_CTRLA_MODE(3);
|
||||
|
||||
sercom->SPI.CTRLB.reg = SERCOM_SPI_CTRLB_CHSIZE(0) | SERCOM_SPI_CTRLB_RXEN;
|
||||
while (sercom->SPI.SYNCBUSY.bit.CTRLB == 1);
|
||||
|
||||
// Set the baud rate
|
||||
sercom->SPI.BAUD.reg = (uint8_t) (SystemCoreClock / (2 * baudrate) - 1);
|
||||
|
||||
// Configure PA12 as MOSI (PAD0), PA13 as SCK (PAD1), PA14 as MISO (PAD2), function C (sercom)
|
||||
gpio_set_pin_direction(MAX3421_SCK_PIN, GPIO_DIRECTION_OUT);
|
||||
gpio_set_pin_pull_mode(MAX3421_SCK_PIN, GPIO_PULL_OFF);
|
||||
gpio_set_pin_function(MAX3421_SCK_PIN, MAX3421_SERCOM_FUNCTION);
|
||||
|
||||
gpio_set_pin_direction(MAX3421_MOSI_PIN, GPIO_DIRECTION_OUT);
|
||||
gpio_set_pin_pull_mode(MAX3421_MOSI_PIN, GPIO_PULL_OFF);
|
||||
gpio_set_pin_function(MAX3421_MOSI_PIN, MAX3421_SERCOM_FUNCTION);
|
||||
|
||||
gpio_set_pin_direction(MAX3421_MISO_PIN, GPIO_DIRECTION_IN);
|
||||
gpio_set_pin_pull_mode(MAX3421_MISO_PIN, GPIO_PULL_OFF);
|
||||
gpio_set_pin_function(MAX3421_MISO_PIN, MAX3421_SERCOM_FUNCTION);
|
||||
|
||||
// CS pin
|
||||
gpio_set_pin_direction(MAX3421_CS_PIN, GPIO_DIRECTION_OUT);
|
||||
gpio_set_pin_level(MAX3421_CS_PIN, 1);
|
||||
|
||||
// Enable the SPI module
|
||||
sercom->SPI.CTRLA.bit.ENABLE = 1;
|
||||
while (sercom->SPI.SYNCBUSY.bit.ENABLE);
|
||||
|
||||
//------------- External Interrupt -------------//
|
||||
|
||||
// Enable the APB clock for EIC (External Interrupt Controller)
|
||||
PM->APBAMASK.reg |= PM_APBAMASK_EIC;
|
||||
|
||||
// Configure GCLK for EIC
|
||||
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID_EIC | GCLK_CLKCTRL_GEN_GCLK0 | GCLK_CLKCTRL_CLKEN;
|
||||
while (GCLK->STATUS.bit.SYNCBUSY);
|
||||
|
||||
// Configure PA20 as an input with function A (external interrupt)
|
||||
gpio_set_pin_direction(MAX3421_INTR_PIN, GPIO_DIRECTION_IN);
|
||||
gpio_set_pin_pull_mode(MAX3421_INTR_PIN, GPIO_PULL_UP);
|
||||
gpio_set_pin_function(MAX3421_INTR_PIN, 0);
|
||||
|
||||
// Disable EIC
|
||||
EIC->CTRL.bit.ENABLE = 0;
|
||||
while (EIC->STATUS.bit.SYNCBUSY);
|
||||
|
||||
// Configure EIC to trigger on falling edge
|
||||
uint8_t const sense_shift = MAX3421_INTR_EIC_ID * 4;
|
||||
EIC->CONFIG[0].reg &= ~(7 << sense_shift);
|
||||
EIC->CONFIG[0].reg |= 2 << sense_shift;
|
||||
|
||||
// Enable External Interrupt
|
||||
EIC->INTENSET.reg = EIC_INTENSET_EXTINT(1 << MAX3421_INTR_EIC_ID);
|
||||
|
||||
// Enable EIC
|
||||
EIC->CTRL.bit.ENABLE = 1;
|
||||
while (EIC->STATUS.bit.SYNCBUSY);
|
||||
}
|
||||
|
||||
void EIC_Handler(void) {
|
||||
// Clear the interrupt flag
|
||||
EIC->INTFLAG.reg = EIC_INTFLAG_EXTINT(1 << MAX3421_INTR_EIC_ID);
|
||||
|
||||
// Call the TinyUSB interrupt handler
|
||||
tuh_int_handler(1);
|
||||
}
|
||||
|
||||
void tuh_max3421_int_api(uint8_t rhport, bool enabled) {
|
||||
(void) rhport;
|
||||
|
||||
if (enabled) {
|
||||
NVIC_EnableIRQ(EIC_IRQn);
|
||||
} else {
|
||||
NVIC_DisableIRQ(EIC_IRQn);
|
||||
}
|
||||
}
|
||||
|
||||
void tuh_max3421_spi_cs_api(uint8_t rhport, bool active) {
|
||||
(void) rhport;
|
||||
gpio_set_pin_level(MAX3421_CS_PIN, active ? 0 : 1);
|
||||
}
|
||||
|
||||
bool tuh_max3421_spi_xfer_api(uint8_t rhport, uint8_t const *tx_buf, size_t tx_len, uint8_t *rx_buf, size_t rx_len) {
|
||||
(void) rhport;
|
||||
|
||||
Sercom* sercom = MAX3421_SERCOM;
|
||||
|
||||
size_t count = 0;
|
||||
while (count < tx_len || count < rx_len) {
|
||||
// Wait for the transmit buffer to be empty
|
||||
while (!sercom->SPI.INTFLAG.bit.DRE);
|
||||
|
||||
// Write data to be transmitted
|
||||
uint8_t data = 0x00;
|
||||
if (count < tx_len) {
|
||||
data = tx_buf[count];
|
||||
}
|
||||
|
||||
sercom->SPI.DATA.reg = (uint32_t) data;
|
||||
|
||||
// Wait for the receive buffer to be filled
|
||||
while (!sercom->SPI.INTFLAG.bit.RXC);
|
||||
|
||||
// Read received data
|
||||
data = (uint8_t) sercom->SPI.DATA.reg;
|
||||
if (count < rx_len) {
|
||||
rx_buf[count] = data;
|
||||
}
|
||||
|
||||
count++;
|
||||
}
|
||||
|
||||
// wait for bus idle and clear flags
|
||||
while (!(sercom->SPI.INTFLAG.reg & (SERCOM_SPI_INTFLAG_TXC | SERCOM_SPI_INTFLAG_DRE)));
|
||||
sercom->SPI.INTFLAG.reg = SERCOM_SPI_INTFLAG_TXC | SERCOM_SPI_INTFLAG_DRE;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -94,6 +94,7 @@ function(family_configure_example TARGET RTOS)
|
|||
family_add_tinyusb(${TARGET} OPT_MCU_SAMD21 ${RTOS})
|
||||
target_sources(${TARGET}-tinyusb PUBLIC
|
||||
${TOP}/src/portable/microchip/samd/dcd_samd.c
|
||||
${TOP}/src/portable/analog/max3421/hcd_max3421.c
|
||||
)
|
||||
target_link_libraries(${TARGET}-tinyusb PUBLIC board_${BOARD})
|
||||
|
||||
|
|
|
|||
|
|
@ -44,16 +44,20 @@
|
|||
#define UART_RX_PIN 22
|
||||
|
||||
// SPI for USB host shield
|
||||
#define MAX3421_SERCOM_ID 2 // SERCOM2
|
||||
#define MAX3421_SCK_PIN 13
|
||||
#define MAX3421_MOSI_PIN 12
|
||||
#define MAX3421_MOSI_PAD 0
|
||||
#define MAX3421_MISO_PIN 14
|
||||
#define MAX3421_MISO_PAD 2
|
||||
#define MAX3421_CS_PIN 18 // D10
|
||||
#define MAX3421_SERCOM_ID 2 // SERCOM2
|
||||
#define MAX3421_SERCOM_FUNCTION 2 // function C
|
||||
|
||||
#define MAX3421_SCK_PIN 13
|
||||
#define MAX3421_MOSI_PIN 12
|
||||
#define MAX3421_MISO_PIN 14
|
||||
#define MAX3421_TX_PAD 0 // MOSI = PAD_0, SCK = PAD_1
|
||||
#define MAX3421_RX_PAD 2 // MISO = PAD_2
|
||||
|
||||
#define MAX3421_CS_PIN 18 // D10
|
||||
|
||||
#define MAX3421_INTR_PIN 20 // D9
|
||||
#define MAX3421_INTR_EIC_ID 4 // EIC4
|
||||
|
||||
#define MAX3421_INTR_PIN 20 // D9
|
||||
#define MAX3421_INTR_EIC_ID 4 // EIC4
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
|
|
|||
|
|
@ -77,11 +77,10 @@ void USB_3_Handler(void) {
|
|||
//--------------------------------------------------------------------+
|
||||
|
||||
#if CFG_TUH_ENABLED && defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421
|
||||
static void max3421_init(void);
|
||||
|
||||
#define MAX3421_SERCOM TU_XSTRCAT(SERCOM, MAX3421_SERCOM_ID)
|
||||
#define MAX3421_EIC_Handler TU_XSTRCAT3(EIC_, MAX3421_INTR_EIC_ID, _Handler)
|
||||
|
||||
static void max3421_init(void);
|
||||
#endif
|
||||
|
||||
void board_init(void) {
|
||||
|
|
@ -223,7 +222,8 @@ static void max3421_init(void) {
|
|||
while (sercom->SPI.SYNCBUSY.bit.SWRST);
|
||||
|
||||
// Set up SPI in master mode, MSB first, SPI mode 0
|
||||
sercom->SPI.CTRLA.reg = SERCOM_SPI_CTRLA_MODE(3) | SERCOM_SPI_CTRLA_DOPO(MAX3421_MOSI_PAD) | SERCOM_SPI_CTRLA_DIPO(MAX3421_MISO_PAD);
|
||||
sercom->SPI.CTRLA.reg = SERCOM_SPI_CTRLA_DOPO(MAX3421_TX_PAD) | SERCOM_SPI_CTRLA_DIPO(MAX3421_RX_PAD) |
|
||||
SERCOM_SPI_CTRLA_MODE(3);
|
||||
|
||||
sercom->SPI.CTRLB.reg = SERCOM_SPI_CTRLB_CHSIZE(0) | SERCOM_SPI_CTRLB_RXEN;
|
||||
while (sercom->SPI.SYNCBUSY.bit.CTRLB == 1);
|
||||
|
|
@ -234,15 +234,15 @@ static void max3421_init(void) {
|
|||
// Configure PA12 as MOSI (PAD0), PA13 as SCK (PAD1), PA14 as MISO (PAD2), function C (sercom)
|
||||
gpio_set_pin_direction(MAX3421_SCK_PIN, GPIO_DIRECTION_OUT);
|
||||
gpio_set_pin_pull_mode(MAX3421_SCK_PIN, GPIO_PULL_OFF);
|
||||
gpio_set_pin_function(MAX3421_SCK_PIN, 2);
|
||||
gpio_set_pin_function(MAX3421_SCK_PIN, MAX3421_SERCOM_FUNCTION);
|
||||
|
||||
gpio_set_pin_direction(MAX3421_MOSI_PIN, GPIO_DIRECTION_OUT);
|
||||
gpio_set_pin_pull_mode(MAX3421_MOSI_PIN, GPIO_PULL_OFF);
|
||||
gpio_set_pin_function(MAX3421_MOSI_PIN, 2);
|
||||
gpio_set_pin_function(MAX3421_MOSI_PIN, MAX3421_SERCOM_FUNCTION);
|
||||
|
||||
gpio_set_pin_direction(MAX3421_MISO_PIN, GPIO_DIRECTION_IN);
|
||||
gpio_set_pin_pull_mode(MAX3421_MISO_PIN, GPIO_PULL_OFF);
|
||||
gpio_set_pin_function(MAX3421_MISO_PIN, 2);
|
||||
gpio_set_pin_function(MAX3421_MISO_PIN, MAX3421_SERCOM_FUNCTION);
|
||||
|
||||
// CS pin
|
||||
gpio_set_pin_direction(MAX3421_CS_PIN, GPIO_DIRECTION_OUT);
|
||||
|
|
@ -269,7 +269,7 @@ static void max3421_init(void) {
|
|||
EIC->CTRLA.bit.ENABLE = 0;
|
||||
while (EIC->SYNCBUSY.bit.ENABLE);
|
||||
|
||||
// Configure EXTINT4 (PA20) to trigger on falling edge
|
||||
// Configure EIC to trigger on falling edge
|
||||
volatile uint32_t * eic_config;
|
||||
uint8_t sense_shift;
|
||||
if ( MAX3421_INTR_EIC_ID < 8 ) {
|
||||
|
|
@ -302,10 +302,11 @@ void MAX3421_EIC_Handler(void) {
|
|||
void tuh_max3421_int_api(uint8_t rhport, bool enabled) {
|
||||
(void) rhport;
|
||||
|
||||
const IRQn_Type irq = EIC_0_IRQn + MAX3421_INTR_EIC_ID;
|
||||
if (enabled) {
|
||||
NVIC_EnableIRQ(EIC_4_IRQn);
|
||||
NVIC_EnableIRQ(irq);
|
||||
} else {
|
||||
NVIC_DisableIRQ(EIC_4_IRQn);
|
||||
NVIC_DisableIRQ(irq);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue